i was on 6.1.2 JB and decided to upgrade to 6.1.3.
after i upgraded it, i updated my network when itunes asked whether i want to update or not.
so i did.
im using digi and i cant connect to 3g.
it only shows E and the connection is really slow.
after that i restore again without updating my network, it still does the same.
i tried my celcom sim card on my ipad and the same problem also.
it only shows E and not 3G.
any solution?