A:AnswerWell, the iPhone 6 was released 5 years ago. So the price got really low. And also, the iPhone 6 is not getting anymore iOS updates. (It stopped at iOS 12.)
A:AnswerThe term "locked" refers to a devices being "SIM locked". What this means is that the phone locked to that specific carrier and all the settings are optimized for that carrier.
A:AnswerJust connect it to your home WiFi or whatever network is at your location (coffee shop, work etc) You don’t have to put time or data on the phone for it to work.
A:AnswerNo, these phones are locked to the total wireless prepaid network. You would be able to use this phone on GSM or CDMA networks like Verizon if you can get it unlocked. The only way you can get this type of phone unlock is by signing up for service with total wireless for at least one year. After that time the phone could be unlocked by the carrier and you could then use it on the Verizon network. You would be much better served by purchasing an already unlocked phone that is CDMA compatible from Best Buy‘s pre-owned stock. Just make sure that you look at the specifications and check for CDMA network compatibility. Barring this think about trading in the failing phone for a new one from your carrier on contract.