How can I reset my phone?

[AC Question]

how can I reset my phone

and not lose my text messages and contacts? because my phone keeps having a pop up message that says google play not responding then google play stopped over and over. it is stuck in guest mode now as well

 

[belodion]

how can I reset my phone

Read these guides:

[GUIDE] SMS Backup & Restore
http://forums.androidcentral.com/showthread.php?t=324662

[GUIDE] How to Factory Data Reset your Android device
http://forums.androidcentral.com/showthread.php?t=467262

It may be worth trying first a Cache Partition wipe, if possible for whatever device you have. It's much easier, and causes no loss of personal data.