Sonim XP3 (XP3800)

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2 weeks 1 day ago - 2 weeks 1 day ago #1 by dst11
Sonim XP3 (XP3800) was created by dst11
The Sonim XP3 (XP3800) has two versions; the Sprint and the ATT. The XP3's specs say: 

LTE  1 / 2 / 3 / 4 / 5 / 8 / 12 / 13 / 14 / 25 / 26 / 38 / 41 / 66
WCDMA  1 / 2 / 4 / 5 / 8
CDMA  800 / 850 / 1900
GSM  850 / 900 / 1800 / 1900
AT&T version has LTE 7/30 instead of CDMA and LTE 25/38/41

The XP3 is on ATT's list of phones that will still work on its network after they phase out 3G in February 2022 (www.att.com/ecms/dam/att/consumer/help/pdf/Devices-Working-on-ATT-Network.pdf). I don't see ATT's list distinguishing between the two versions; the ATT version and the Sprint version.

Could I use the Sprint XP3 on carriers that use the ATT network, now and after ATT phases out 3G, like TruPhone or FreeU? You see 'new condition' Sprint XP3s are $30 on eBay while ATT XP3s are more than double of that.

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2 weeks 1 day ago #2 by KentE
Replied by KentE on topic Sonim XP3 (XP3800)
Good question, dst11. I don't know the answer.

I've spent a few minutes perusing the AT&T list you linked to-- thanks for that! Lots of interesting incliusions, and lots of notable devices that aren't on the list. I'm really tired of having my phones declared obsolete by one or more carriers....
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1 week 5 days ago #3 by joseph
Replied by joseph on topic Sonim XP3 (XP3800)
Doesn't Sprint phones have CDMA capabilities?

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1 week 5 days ago - 1 week 4 days ago #4 by dst11
Replied by dst11 on topic Sonim XP3 (XP3800)
What will CDMA do? Isn't AT&T (and AT&T MVNO's) GSM?

I run the IMEI of several Sprint XP3 phones I saw on eBay through FreeUp's IMEI checker and all were rejected.
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