Is it OK to have Tmobile radiostack 6.21 with AT&T servi

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Hi,

I have problem with my AT&T official radiostack A.20.10. I got drop frequently. In the same location, the phone couldn't pickup any signal when another Nokia working just fine. I wonder if upgrading to Tmobile radio stack will help.

Which radiostack is better for international compatibility A.20.10 or 6.21?

Thanks

MDD

To answer you question, Yes! :wink:


HTH