I Just had my phone opened 5210e so i could use all sim cards in it but now i cant seem to phone out on it or recieve calls it just makes a funny beeping sound when i try to call out, when someone tries to phone me it makes the same noise but says on their screen error in conection, but i can still recieve and send text messages does anyone know if this can be fixed and how? please let me know a.s.a.p Thanks