1. If you take it abroad, you have to look for a new network.
2. If you use it in planes, it may affect the flight controls.
3. If you send a text message, it is cheaper than a phone call.
4. If you leave it on, the battery will run out.
5. If a dog is happy, it wags its tail.
6. If a lizard loses its tail, a new one will grow.
7. If you throw a stone into a river it will sink.