I just bought an unlocked Palm phone (PVG100) from eBay. Love the form factor, text/data/vm seems to work, but hate the battery life. Constantly swapping which phone the SIM resides in is a pain. I envision being able to pick which phone I walk out the door with depending on what I plan to do.
How do I get two phones mapped to the same number? Is it as simple as walking into a T-Mobile store to get a second "dummy" SIM? What's the additional cost per month? Would messaging apps (like Whatsapp) push messages to both phones?
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