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T-Mobile and Verizon should allow any modern device. Verizon used to need a activation conponent for the CDMA radio but modern devices just use LTE and voLTE. T

T-Mobile and Verizon should allow any modern device. Verizon used to need a activation conponent for the CDMA radio but modern devices just use LTE and voLTE. They did have a visual voicemail blob that used to be pulled in, but now they follow spec and don't require anything special. Sprint (which is now T-Mobile) has required an activation app for their CDMA devices called SprintDM. Without it, phone will not activate and work. Most alternative OS like LineageOS don't include it, but if you activate on stock OS and don't wipe modem partitions, it continues to work. Thankfully they are transitioning to T-Mobile network. AT&T has no activation crap but may not let imported devices based on IMEI numbers they don't have.

deepstack 6y ago
In Europe, GSM is still being used. I heard in they are being phased out. Anyone knows how that will affect old nokia type of phones?
- fabioborellini 6y ago
  The cheapest candy bar phones available started having 3rd gen (WCDMA) network support around 2010, so GSM-only handsets should be out of active use. Of course the classic monochrome Nokia phones will cease working once GSM is shut down. On the other hand there must be quite a lot of embedded devices using only GSM. For example, this year the elevator maintenance company offered our housing company GSM emergency phone units to replace landline-based ones. WCDMA-supported units would have cost a few thousand euros more.
sloshnmosh 6y ago
This is the correct answer as I can attest to one of my phones pulling down a visual voicemail blob and also a problem I had with a Sprint based CDMA device that was running Lineage OS that lost cell connection and I could not get it back without flashing back to the original ROM. (Thanks for posting this @joecool1029 and confirming what I was witnessing)
happycube 6y ago
Once AT&T goes VoLTE only they're going to have a limited list of accepted phones. sigh I still remember being at RadioShack and glancing at the Verizon section and thinking "hey, it's the island of misfit phones!"

deepstack 6y ago

In Europe, GSM is still being used. I heard in they are being phased out. Anyone knows how that will affect old nokia type of phones?

fabioborellini 6y ago
The cheapest candy bar phones available started having 3rd gen (WCDMA) network support around 2010, so GSM-only handsets should be out of active use. Of course the classic monochrome Nokia phones will cease working once GSM is shut down. On the other hand there must be quite a lot of embedded devices using only GSM. For example, this year the elevator maintenance company offered our housing company GSM emergency phone units to replace landline-based ones. WCDMA-supported units would have cost a few thousand euros more.

sloshnmosh 6y ago

This is the correct answer as I can attest to one of my phones pulling down a visual voicemail blob and also a problem I had with a Sprint based CDMA device that was running Lineage OS that lost cell connection and I could not get it back without flashing back to the original ROM. (Thanks for posting this @joecool1029 and confirming what I was witnessing)

happycube 6y ago

Once AT&T goes VoLTE only they're going to have a limited list of accepted phones. sigh I still remember being at RadioShack and glancing at the Verizon section and thinking "hey, it's the island of misfit phones!"