[gUntura]

My BB 8707v have a bad wireless coverage... when I start it the level is high (5 lines) but in 2 sec. it drops to 2 lines

What should I do???

[Dubdub]

What do the coverage maps for your carrier show? How about others using the same carrier? Are you in an area of good signal coverage?

If not there isn't much you can do.

[gUntura]

Yes I am in a good signal coverage.