If the kids (or you) have been tough on the cell phones, and something's broken but you don't have an extended warranty or your service agreement is not close to renewal, here's a tip from Lifehacker. Check out this Repair4MobilePhone web site for a variety of cell phone manuals, do-it-yourself how-to instructions, and frequently asked questions.

Need to repair your mobile (cellular) phone? Need to fix a broken display? Want to know what chips are actually inside your mobile phone? Or just in the mood for modding your mobile gadget? Here is a collection of links to take apart instructions, disassembly pictures, upgrade and repair manuals, as well as do-it-yourself (DIY) tips and tricks for mobile phones, the site beckons above a list of 20 cell phone manufacturers.

Click on Samsung, for example, and you'll find a list of specific repairs others have tackled. Everything is not here, of course, but it's an interesting mix.

Lifehacker warns you to check with your phone manufacturer and/or warranty to be sure simple repairs (especially ones that could go wrong) won't void any service agreements.