My phone doesn't have a network mode option and can't select 3g or 2g and thus my edge I'd in small letter though my bis come up in another bb pls some one help can factory reset help in this case
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Did it work previously?

Have you tried a battery pull? 1st step to take if device is having problems? - BlackBerryFAQ

No it has never worked and have tried. Pulling the battery but no result
Posted via BlackBerryForums.com Mobile

1. The 8520 is a 2G only device. It does not have 3G.
2. Do you have a BLACKBERRY specific data plan (BIS) from your phone service provider?
3. Do they support that device?