1. Well, if there aren't any phones, than you're probably playing an older beta, you may want to try downloading the most current version.
2. Not, yet. Mew will be catchable via in game event in a later beta.
3. The only way to obtain Totodile, Chikorita, and Cyndaquil is to pick one of them as your starter at the start of the game. In later betas, Zel will make them available in the wild as well.
4. Zel doesn't want that process reviled ATM, but I believe there is a video on youtube on how to do that.