How long does it take to mine my first Bitcoins?

[Matt]

At that speed (640 KH/s) it would take you 22,313 years to generate 1 bitcoin. Yes thats over 22 thousand years.

Bitcoin mining with a phone is absolutely pointless. You need thousands of dollars worth of ASIC mining equipment to compete in bitcoin mining these days. Most people using PC's and similar devices to mine have moved on to script based cypto currencies, such as litecoin.

I recommend trying Dogecoin. Its pretty easy to mine at the moment.

Here is a calculator you can use to determine how much bitcoin you will earn for a given hashrate - http://www.coinwarz.com/calculators/bitc...00&hc=0.00

You can also use that same calculator for doge and litecoin by selecting different currencies under "mining calculators"