Saving the world from high cellphone bill prices!
How many bars do you have? If you have good coverage where you are, there are several possibilities.
1. Your phone maybe over loaded with messages. (try deleting all your messages in your inbox/outbox.
2. If that doesnt work there possibly could be an issues laying deep in the phone, possibly customer care can help (1800.937.8997)... If you want to bypass all that non-sense calling care. Try doing a master reset on the device. (if you post your type of device I could hlep walk you through it.
3. Maybe its the other persons device, can YOU text other people?
4. Maybe you accidentally blocked their number? or visa-versa?
1 Private Answer