Found a thread here for 640XL, but not the 640. Wikipedia has some information but conflicts with some other sites.
What are the different model numbers for the 640 and what are the frequency bands each supports (I assume that is the only difference).
Anything else? I wish they would just keep things simple. I think like 650 has only single & dual SIM variant, right?
What are the different model numbers for the 640 and what are the frequency bands each supports (I assume that is the only difference).
- RM-1072 : For AT&T & other "standard" GSM?
- RM-1073 : For US including T-Mobile AWS frequencies?
- RM-1074 : ???
- RM-1075 : ???
- RM-1076 : Single 3G only
- RM-1077 : Dual SIM 3G only
Anything else? I wish they would just keep things simple. I think like 650 has only single & dual SIM variant, right?
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