I have a Kyocera phone on a Virgin Mobile account.
Problems with Virgin Mobile:
1. Charged account double (happened once)
2. In warranty, only sends replacement on bad phone if I pay $25 shipping
3. Charging additional for tax all of a sudden without notice
4. Refusing to credit bank account for tax charges they didn't notify of
5. Employees -several have a bad attitude
Problems with Kyocera phone:
1. disconnects
2. screen changes to password screen and party cannot hear you
3. slow processor so no Uber, etc unless you spend 45 minutes trying