If you have someone's mobile number, but what to get their address, then this is how I managed to do it:
Step 1: Use their phone number to get general information about them
You'll be surprised how many people post their phone number publically online for Google to pick up on an index.
Search for the phone number and hope for the best.
Even if this doesn't reveal an address, it can give you useful information for step 2...
Step 2: Call them
Using what data you have found about this person online, initiate a conversation pretending to be from a company they are likely to know, trust, and potentially even admire.
Tell them you need to verify their address before you can reveal the important information to them.
A large percent of the time, they will cooperate.
Just watch out because, depending on what you're planning to do and where you live, this kind of stuff could be illegal and might land you in jail.
SO my advice first and foremost is don't do anything illegal in the pursuit of someone's home address.