Here are some potential questions on marketing research, consumer behavior and customer service that could be asked in a survey for T-Mobile:
1. How did you first learn about T-Mobile wireless services?
2. What factors were most important in your decision to choose T-Mobile?
3. On a scale of 1-5, how satisfied are you with T-Mobile's coverage in your area?
4. How likely are you to recommend T-Mobile to friends and family?
5. What do you like most about T-Mobile's plans and services?
6. Is there anything T-Mobile could improve upon?
7. How can T-Mobile provide better customer service?