Sorry for my absence these past few months. Quick report of my testing from the context of San Antonio, Texas, USA
10iii - XQ-BT52
- T-Mobile (USA)
** No coercion, call for whitelisting or IMEI tricks needed to register
** VoLTE working for all services
** Lacking band 12, service is next to non-existent in semi-rural settings
** Lacking band 12, service is extremely spotty in suburban settings
** Indoor service in metropolitan areas can be mixed - ATT (USA)
** Needed to apply coercive action to get device IMEI whitelisted
** VoLTE working for all services
** Lacking band 12, service is next to non-existent in semi-rural settings
** Lacking band 12, service is extremely spotty in suburban settings
** Indoor service in metropolitan areas can be mixed - Verizon (USA)
** Could not get the device registered using coercive action or IMEI tricks
^Coercive action meaning a demand by my lawyer to the carrier’s legal office though official channels.