Phones, smart ~~~

Smart phones

Cheap Smart Phones recommenede

The Nokia Lumia 520

Moto G

Setting a Sleep Timer on iPhone or iPad

iOS devices have sleep timer functionality built right into the Clock app.

iPhone, 10 special tricks TGTH

or here

How to make iPhone run faster Kenh14.vn/

or here

How to Use Spotlight Search on Your iPhone or iPad Howtogeek.com/

Tránh xa iPhone cũ bị khóa iCloud

Here

How to Enable Wi-Fi Calling on an Android Phone HOW

How to Turn on Safe Mode - Android MAKE

CDMA vs GSM Make GSM "stands" Global, SIM, more

Verizon & Sprint are using a CDMA

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------