T-Mobile Assessment Tests

T-Mobile Aptitude Tests: Free Practice Questions (2026) Situational Judgement Test

1. Question 1 of 10

   You are an access administrator. You are handing a customer’s account migration to the evening shift before a week off. Everything is ready except that two of the customer’s own staff have not confirmed which of them keeps the senior permissions, and they have disagreed about it twice. The migration is scheduled to run tonight at eleven. Which response below would be most effective, and which would be least effective?

   1. Hand the migration over with the checklist and leave the permissions question with the customer, whose disagreement it is and who will have to settle it themselves.
   2. Postpone the migration until you are back in a week, so that nothing runs tonight with an open question hanging over who gets which permissions.
   3. Write the permissions question into the handover note with the history, and go, so that the evening shift has it in front of them when they start.
   4. Tell the evening shift directly what is unresolved and that the two of them have already disagreed twice, and give the customer a time by which it must be settled tonight.
   Show the answer

   Most effective: D. Tell the evening shift directly what is unresolved and that the two of them have already disagreed twice, and give the customer a time by which it must be settled tonight.

   Least effective: A. Hand the migration over with the checklist and leave the permissions question with the customer, whose disagreement it is and who will have to settle it themselves.

   A: Passes the problem on without naming it: the evening shift runs a migration believing it is ready, and the one unresolved thing sits with two people who have already failed twice.

   B: Buys certainty with a week of the customer's time: the disagreement may settle tonight, and only the customer can judge whether waiting is worth it.

   C: Puts a live problem into a document: a note read at seven is better than nothing and it is not the same as the shift knowing what it is walking into.

   The most effective response is to tell the evening shift directly what is unresolved and that the two of them have already disagreed twice, and give the customer a time by which it must be settled. Two things have to happen before eleven and only you can supply either. It beats postponing the migration until you are back in a week, because that is a real cost to the customer and they should weigh it against a question that may settle in an hour. It beats writing the permissions question into the handover note with the history, because a note describes the problem while a conversation makes sure it has been received. The least effective response is handing the migration over with the checklist and leaving the permissions question with the customer: it is worse than either of the other two, because both leave the risk visible to somebody, while this hands over a migration described as ready. The principle: name the unresolved thing to the people who inherit it, and give whoever must decide a time to decide by.

2. Question 2 of 10

   You are a procurement assistant. A colleague’s summary says a supplier’s licence renewal will cost eleven thousand pounds. From the quote you read last week it looked closer to nineteen. The summary goes to the budget meeting on Thursday. He is prickly about being checked and the two of you share a desk. Which response below would be most effective, and which would be least effective?

   1. Send a note to the person chairing Thursday's meeting saying the licence figure may be understated, so they can look into it before the budget is set.
   2. Avoid the conversation and let the summary go, since the quote may have changed, he is prickly about being checked, and the gap will surface at renewal.
   3. Ask him today which quote the eleven thousand came from, since the one you read looked closer to nineteen, so that whichever of you is wrong is sorted before Thursday.
   4. Recheck the quote yourself, and if it does confirm nineteen thousand, put the corrected figure straight into the summary before it goes on Thursday.
   Show the answer

   Most effective: C. Ask him today which quote the eleven thousand came from, since the one you read looked closer to nineteen, so that whichever of you is wrong is sorted before Thursday.

   Least effective: B. Avoid the conversation and let the summary go, since the quote may have changed, he is prickly about being checked, and the gap will surface at renewal.

   A: Goes round the one person who can settle it in a minute: he finds out from the chair that his figure was questioned behind him.

   B: Avoids the difficult conversation: a budget is set on Thursday on a figure eight thousand pounds out, and the difference surfaces when it is too late.

   D: Edits a colleague's work without telling him: the number may end up right, and he presents a summary he no longer recognises.

   The most effective response is to ask him today which quote the eleven thousand came from, since the one you read looked closer to nineteen. One question settles which of two quotes is being read, it costs a minute, and he is not corrected in front of anybody. It beats sending a note to the chair saying the licence figure may be understated, because he can resolve it immediately and this way he learns his figure was doubted from somebody else. It beats rechecking the quote yourself and putting the corrected figure into the summary, because changing a colleague’s document without telling him leaves him presenting something he has not seen. The least effective response is letting the summary go because he is prickly about being checked: it is worse than either of the other two, because both get the figure examined before Thursday, while this lets a budget be set eight thousand pounds out because the conversation would be awkward. The principle: when a colleague’s number looks wrong, ask the colleague, and their being prickly is a reason to be careful how you ask rather than not to.

3. Question 3 of 10

   You are a security analyst. A password reset system stopped working overnight and a manager asks you in the corridor what happened. You know a certificate expired at midnight. You have not confirmed that this caused the failure. Certificates expiring is the usual cause of this kind of outage, and he is on his way to tell his team something. Which response below would be most effective, and which would be least effective?

   1. Tell him a certificate expired at midnight and that this is almost always the cause, so that he has something definite to give his team on his way past.
   2. Tell him a certificate expired at midnight and that you have not yet confirmed it caused this, and say when you will know, so that he can tell his team that much.
   3. Tell him the expired certificate caused the outage, even though you cannot yet show that it did. That is nearly always what this turns out to be.
   4. Tell him you cannot say anything until the investigation is finished, and ask him to hold off telling his team until there is a confirmed answer.
   Show the answer

   Most effective: B. Tell him a certificate expired at midnight and that you have not yet confirmed it caused this, and say when you will know, so that he can tell his team that much.

   Least effective: C. Tell him the expired certificate caused the outage, even though you cannot yet show that it did. That is nearly always what this turns out to be.

   A: Hands over a likely cause as a settled one: the qualification will not survive the retelling, and his team hears a confirmed explanation.

   C: States as fact the cause you assume: nobody has established the link, and an entire team is told a confirmed explanation that may be wrong.

   D: Withholds a fact you are sure of: the certificate did expire at midnight, and that alone is something his team can be told.

   The most effective response is to tell him a certificate expired at midnight and that you have not yet confirmed it caused this, and say when you will know. You have one certain fact and one open question, and separating them lets him tell his team something true. It beats telling him the expiry is almost always the cause so he has something definite, because that qualifier will be dropped in the retelling. It beats telling him you cannot say anything until the investigation is finished, because the expiry itself is confirmed and worth passing on. The least effective response is telling him the expired certificate caused the outage: it is worse than either of the other two, because one qualifies it and the other says nothing untrue, while this supplies a causal link nobody has established to a manager on his way to brief his team. The principle: separate what you know from what you assume, give both, and put a time on when the second becomes the first.

4. Question 4 of 10

   You are a security analyst. A project has finished and left eleven unused software licences that nobody has asked about. Two colleagues have already taken one each for personal machines and told you it is normal. The licences cost the company four hundred pounds each per year and renew automatically next month unless somebody cancels them. Which response below would be most effective, and which would be least effective?

   1. Cancel the nine that are left before the renewal and say nothing about the two that have already gone, so that the money is saved without anybody being named.
   2. Take one of the licences for your own use as the others have, and cancel the rest before the renewal date, which still saves the company most of the money.
   3. Tell whoever owns the project budget that eleven licences are renewing next month and that two are already on personal machines, so that they decide what happens to all eleven.
   4. Raise it with the two colleagues and ask them to hand theirs back, then cancel all eleven before the renewal without involving anybody else in it.
   Show the answer

   Most effective: C. Tell whoever owns the project budget that eleven licences are renewing next month and that two are already on personal machines, so that they decide what happens to all eleven.

   Least effective: B. Take one of the licences for your own use as the others have, and cancel the rest before the renewal date, which still saves the company most of the money.

   A: Solves the cost and buries the rest: four hundred pounds a year is still walking out on two machines and the practice is left described as normal.

   B: Takes an advantage the role forbids: you are the person who saw the licences, and the saving does not buy you one of them.

   D: Settles it privately with the people who took them: it may work, and the budget holder still never learns that eleven licences nearly renewed unnoticed.

   The most effective response is to tell whoever owns the project budget that eleven licences are renewing next month and that two are already on personal machines. The renewal is a real deadline, the budget holder can act on it, and the two already gone are part of the same fact rather than a separate accusation. It beats cancelling the nine that are left and saying nothing about the two, because two are still being paid for and the practice goes unexamined. It beats asking the two colleagues to hand theirs back and cancelling all eleven yourself, because that may resolve today without anybody learning that eleven licences sat unnoticed. The least effective response is taking one of the licences for your own use as the others have: it is worse than either of the other two, because both end with you holding nothing, while this has the person who spotted the problem taking a share of it. The principle: when you find something valuable that nobody is watching, the finding goes to whoever owns it, and finding it earns you none of it.

5. Question 5 of 10

   You are a quality assurance analyst. Test plans need a second reviewer’s approval before testing starts. A colleague has sent you a forty-page plan and asked you to approve it this afternoon so his team is not held up. You have no time today and only a rough idea of what his area does. He has approved several of yours without comment. Which response below would be most effective, and which would be least effective?

   1. Approve the parts you understand and note in the approval which sections you did not read, so his team can start on the areas that were covered.
   2. Tell him you cannot do it today and leave it at that, since you have no time and the plan is in an area you do not know well.
   3. Tell him you cannot approve forty pages today or judge his area properly, and take it to whoever assigns reviewers, so that his team gets somebody who can.
   4. Approve the plan unread this afternoon. He knows his own area far better than you do, and he has approved several of yours without any comment at all.
   Show the answer

   Most effective: C. Tell him you cannot approve forty pages today or judge his area properly, and take it to whoever assigns reviewers, so that his team gets somebody who can.

   Least effective: D. Approve the plan unread this afternoon. He knows his own area far better than you do, and he has approved several of yours without any comment at all.

   A: Splits an approval that is not divisible: the approval unlocks the whole plan, and a note about which sections were skipped travels less far than the approval does.

   B: Declines without offering a route: his team is held up and nothing has been done to find them a reviewer who could actually help.

   D: Breaches the control the approval exists to be: the second reviewer exists so that somebody else has read the plan, and the record will say one did.

   The most effective response is to tell him you cannot approve forty pages today or judge his area properly, and take it to whoever assigns reviewers. You cannot do what is being asked and his team still needs a reviewer, so handing the problem to whoever can assign one is the useful move. It beats approving the parts you understand and noting which sections you did not read, because the approval releases the whole plan and the note does not travel with it. It beats telling him you cannot do it today and leaving it there, because that leaves his team stuck with nothing changed. The least effective response is approving the plan unread because he has done the same for you: it is worse than either of the other two, because one reads something and the other leaves the plan unapproved, while this puts a second reviewer’s name on forty unread pages. The principle: when you cannot give the approval that is being asked for, say so and find the person who can, and never let a reciprocal favour stand in for a reading.

6. Question 6 of 10

   You are a junior data engineer. A supplier who provides a daily data feed has told you their file will be late every day for the next fortnight while they move systems. The team that publishes the morning figures depends on that feed and has committed to a customer deadline of nine o’clock each day. Nobody outside your inbox knows. Which response below would be most effective, and which would be least effective?

   1. Keep pressing the supplier every day to deliver on time. It is their commitment to meet, and chasing them is the fastest route back to a nine o'clock file.
   2. Tell the publishing team that the feed may be late occasionally over the next two weeks, without going into the supplier's system move or the full fortnight.
   3. Tell the publishing team today that the feed will be late every day for a fortnight, and ask what they need from you to protect their nine o'clock commitment.
   4. Put a note in the shared channel about the supplier's system move, so that anybody depending on the feed can see it and plan around it themselves.
   Show the answer

   Most effective: C. Tell the publishing team today that the feed will be late every day for a fortnight, and ask what they need from you to protect their nine o'clock commitment.

   Least effective: A. Keep pressing the supplier every day to deliver on time. It is their commitment to meet, and chasing them is the fastest route back to a nine o'clock file.

   A: Passes the problem on without owning it: the supplier has already said a fortnight, and the team promising nine o'clock still does not know it is at risk.

   B: Softens a warning until it cannot be planned with: occasionally and a fortnight every day are different problems and only one of them can be prepared for.

   D: Publishes to nobody in particular: the team with the nine o'clock commitment has no reason to be reading that channel this morning.

   The most effective response is to tell the publishing team today that the feed will be late every day for a fortnight, and ask what they need to protect their nine o’clock commitment. A fortnight of late files against a daily deadline is their problem to solve, and they can only solve it knowing the shape of it. It beats telling them the feed may be late occasionally over the next two weeks, because that produces no plan and every day for two weeks is a different problem. It beats putting a note in the shared channel about the supplier’s system move, because that is not the same as telling the people with a customer commitment. The least effective response is pressing the supplier every day to deliver on time: it is worse than either of the other two, because both put something in front of the affected team, while this spends a fortnight chasing a supplier who has already given their answer. The principle: when a supplier’s problem lands on somebody else’s promise, tell the people who made the promise first.

7. Question 7 of 10

   You are a security analyst. A customer’s account has been locked for four days while a review runs. Your manager has told the team to say it will be unlocked within twenty-four hours, which has now been said three times. The customer’s operations lead rings you and asks, plainly, when she will have her account back. Which response below would be most effective, and which would be least effective?

   1. Tell her you cannot give a date at all and that she should take it up with her account manager, who has a better line into the review than you do.
   2. Promise her it will be unlocked within twenty-four hours. That is the line the team has been given, and it is not your place to depart from it.
   3. Tell her the twenty-four hours has been said three times and you cannot promise a fourth, find out today where the review actually is, and ring her back with it.
   4. Tell her the review is complex and that you understand her frustration, and avoid giving any date at all until somebody senior has authorised one.
   Show the answer

   Most effective: C. Tell her the twenty-four hours has been said three times and you cannot promise a fourth, find out today where the review actually is, and ring her back with it.

   Least effective: B. Promise her it will be unlocked within twenty-four hours. That is the line the team has been given, and it is not your place to depart from it.

   A: Refuses her and moves her on: she has rung three times, and being sent elsewhere is what a fourth day of nothing looks like from her side.

   B: Repeats an assurance you know has failed: the same twenty-four hours has been given three times, so she is being told something the evidence contradicts.

   D: Substitutes sympathy for information: she is four days in, and understanding without a fact leaves her with nothing new to act on.

   The most effective response is to tell her the twenty-four hours has been said three times and you cannot promise a fourth, find out today where the review actually is, and ring her back. Three failed promises is itself the most honest thing you can tell her, and finding out turns the call into something that changes her position. It beats telling her you cannot give a date and that she should take it up with her account manager, because she has rung three times and being redirected is indistinguishable from being ignored. It beats saying the review is complex and that you understand her frustration, because sympathy without a fact is the fourth day of nothing. The least effective response is promising it will be unlocked within twenty-four hours: it is worse than either of the other two, because both stop short of telling her something the evidence has disproved, while this repeats a promise that has failed three times. The principle: when the line you have been given has already failed, say that it has and go and find something true, rather than passing it on a fourth time.

8. Question 8 of 10

   You are a test analyst. A batch of two thousand records has to be checked against the customer’s own list before a migration. Checking them properly means a day of work. Checking a sample of two hundred takes an hour and would almost certainly find any systematic error. The migration is tomorrow and nobody has said which is expected. Which response below would be most effective, and which would be least effective?

   1. Check the sample of two hundred and report the batch as checked, since a sample finds any systematic problem and a full check would cost a day nobody has.
   2. Check the full two thousand and let the migration slip by a day, since the check exists to be done and a sample is not the thing that was asked for.
   3. Check the sample and note in the report that two hundred of two thousand were checked, then get on with preparing for tomorrow's migration.
   4. Ask whoever owns tomorrow's migration whether a sample or the full batch is wanted, so that the trade is theirs, and do whichever they choose today.
   Show the answer

   Most effective: D. Ask whoever owns tomorrow's migration whether a sample or the full batch is wanted, so that the trade is theirs, and do whichever they choose today.

   Least effective: A. Check the sample of two hundred and report the batch as checked, since a sample finds any systematic problem and a full check would cost a day nobody has.

   A: Breaches the check where it counts: the report will say two thousand records were checked against the customer's list when two hundred were.

   B: Spends a day without asking whether it was wanted: nobody has said which check is expected, and the migration date belongs to somebody else.

   C: Records the limit and decides the question: the note is honest, and the choice between a day and an hour was still made by the person with least standing to make it.

   The most effective response is to ask whoever owns tomorrow’s migration whether a sample or the full batch is wanted, and do whichever they choose today. Nobody has said which check is expected, and the trade of a day’s schedule against a class of error a sample might miss belongs to them. It beats checking the full two thousand and letting the migration slip by a day, because that is a real cost to somebody else’s date and they have not been asked whether they will pay it. It beats checking the sample and noting that two hundred of two thousand were done, because an honest note still leaves the decision with the person least placed to weigh it. The least effective response is checking the sample and reporting the batch as checked: it is worse than either of the other two, because one does the fuller check and the other records what was done, while this reports two thousand records as checked when two hundred were. The principle: when the choice is between somebody else’s day and somebody else’s risk, ask them, and never let a report describe a check that was not performed.

9. Question 9 of 10

   You are a support analyst. In a team meeting a colleague says that the handover notes you write are too short and that he wastes time chasing detail. You think he is wrong and that he does not read them. Six people are in the room and one has already nodded. You have worked with him for a year without friction. Which response below would be most effective, and which would be least effective?

   1. Say nothing in the meeting and take it up with him afterwards, since a year of working together without friction is worth more than a point won in front of six.
   2. Ask him in the room for an example of a note that was too short, so that the discussion is about a specific handover rather than about how you write.
   3. Agree in the meeting that the notes could be longer and start writing more, since it costs you little and the disagreement ends there and then.
   4. Say in front of the team that he does not read the notes he is complaining about, and let the six people present draw their own conclusion from that.
   Show the answer

   Most effective: B. Ask him in the room for an example of a note that was too short, so that the discussion is about a specific handover rather than about how you write.

   Least effective: D. Say in front of the team that he does not read the notes he is complaining about, and let the six people present draw their own conclusion from that.

   A: Leaves an unanswered criticism in the room: the other five heard it, and the part you believe is wrong stands until somebody corrects it.

   C: Concedes a point you believe is wrong: the notes get longer for no reason anybody has established, and he has no reason to start reading them.

   D: Personalises the disagreement: it answers a point about the notes by putting his working habits in front of six people, and neither claim gets tested.

   The most effective response is to ask him in the room for an example of a note that was too short. That turns an argument about your writing into an argument about a document, which is the only version that can be settled, and it is fair to ask where the claim was made. It beats saying nothing in the meeting and taking it up afterwards, because five other people heard the criticism and silence leaves it as the last word. It beats agreeing that the notes could be longer and starting to write more, because agreeing to something you believe is untrue makes them longer without establishing that they were short. The least effective response is saying in front of the team that he does not read the notes he is complaining about: it is worse than either of the other two, because both keep the discussion about the notes, while this answers a criticism by putting his habits in front of six colleagues. The principle: move a general criticism onto a specific example, in the room where it was made, and never answer it with a claim about the person.

10. Question 10 of 10

    You are a test analyst. A set of automated checks has been failing on and off for a fortnight. They were written by somebody who has since moved to another team and nobody has been given them. Two people on your own team now scroll past the failures out of habit, which means a genuine failure would be scrolled past too. Which response below would be most effective, and which would be least effective?

    1. Fix the checks yourself over the next few evenings and say nothing about it, so the failures stop and everybody quietly goes back to trusting them again.
    2. Ask the person who wrote them whether she would mind taking a look, even though she moved teams a while ago and has a full workload of her own now.
    3. Say in the stand-up that the checks have no owner and that people have stopped believing them, so that somebody is given them instead of everybody ignoring them.
    4. Scroll past the failures as the others do, and assume that anybody who genuinely needed these checks would have been given them at some point by now.
    Show the answer

    Most effective: C. Say in the stand-up that the checks have no owner and that people have stopped believing them, so that somebody is given them instead of everybody ignoring them.

    Least effective: D. Scroll past the failures as the others do, and assume that anybody who genuinely needed these checks would have been given them at some point by now.

    A: Repairs the symptom in private: the checks work again and still belong to nobody, so the same gap reopens the next time they break.

    B: Asks somebody with neither the time nor the remit: it feels like the right door and it is the one person who no longer has any reason to answer.

    D: Assumes the job away: a fortnight of nobody being given them is evidence against the assumption, and it makes you the third person the failures no longer reach.

    The most effective response is to say in the stand-up that the checks have no owner and that people have stopped believing them. The real damage is not the failing checks, it is that the team has learned to ignore a signal, and the only fix is an owner. It beats fixing the checks yourself over the next few evenings and saying nothing, because repairing them silently leaves them ownerless, so the next break restores this situation. It beats asking the person who wrote them to take a look, because she has moved teams and has neither the time nor any remaining responsibility. The least effective response is scrolling past the failures as the others do: it is worse than either of the other two, because both try something about a signal nobody trusts, while this adds a third person to the habit and rests on an assumption a fortnight has disproved. The principle: when a shared signal has stopped being believed, the thing to raise is the ownership, not the failure.