How SMS Mobile App works
Step 1, sign in with Google: there is no password to remember, and every account starts on the Free plan. Step 2, register your phone: install the Android app on the phone whose number people know and sign in there too; only that phone sends, through its own SIM. Step 3, review before anything sends: see the final list and the count; numbers that are not ordinary Pakistani mobiles are refused, with the reason; you press send yourself and can pause or cancel at any time. Step 4, choose who it goes to: pick people from your phone's contacts or type their numbers in, and write the message once. Step 5, your phone sends, one at a time: each message leaves your own number, never twice; recipients see your number, and your carrier's normal SMS rate applies. Step 6, see what happened: when a send finishes you see how many went and which failed, with the reason; sent means it left your phone, and delivery is up to the carrier.