hello, i am Samuel from Nigeria. iam having the same problem with the blackberry passport after using the passport for over a year. when i move to some area, the phne connects to the signal but in most places, there is no signal in my passport but as soon as i put the same sim in another phone, i get network signal everywhere i go. i gave it to 2 different phone repairers but none could fix it after several attempst. finally, a phone repairer told me that nothing can be done to it for now. it seems it is a general fault with blackberry passport that has no solution. has anyone got a solution to it? i have wiped my phone twice but no solution