These are some common tools used to work on this device. You might not need every tool for every procedure.

Optimus-branded devices have been produced running both Android and Windows Phone 7 operating systems. The L90 was the last model created in the third generation L series in 2014. The L90 is a 100% touch screen operated device and contains some impressive features such as a 1.2 GHz Quad-core processor, long lasting 2,400 mAh battery, and a 5 megapixel camera with auto-focus, putting it in direct competition with Apple's iPhone 5.

Link to a Troubleshooting page can be found here: LG Optimus L90 - Troubleshooting Page

LG Website: LG Optimus L90

LG Optimus L90 User Manual

LG Optimus Wiki

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