Many customers already have a phone they love, some don’t want to cause a nasty break-up. Keep it!
What will work?
Any unlocked GSM phone. In the USA T-Mobile and AT&T are GSM carriers. Most people you know probably have a GSM phone unless they are on Sprint or Verizon. GSM is the world standard and most phones you find online are GSM.
The time has come for you to choose wisely: