I have a ZTE dongle, I am not sure to exactly which model it is, but its a ZTE. I was wondering whether I would be able to use my MTNL 3G sim card in the dongle. Even if I was able to use the sim card in the dongle, how much would the speed be effected as compared to using it in a mobile phone. If a MTNL sim card would not be compatible then would the same be for any other sim card?
You shouldn't have any problem connecting the MTNL sim in the ZTE dongle. Just to be on the safe side you can always confirm when purchasing the dongle. Or if you have it provide the dongle model code.