If the phone is a GSM phone it will work, but if it is a CDMA phone it will not work. Qatars GSM network is a so called 3.5G network and it's pretty fast.
If the phone is a GSM phone it will work, but if it is a CDMA phone it will not work. Qatars GSM network is a so called 3.5G network and it's pretty fast.