iphone jitters, how to solve?

   4G mobile phone as currently the most popular smart phone to surf the Internet has brought us Speed. However, at the same time enjoy high-speed Internet access, we also found that 4G mobile network has the disadvantage of poor stability, especially indoors, often unable to receive 4G signal. ? So for this depressing situation, how to solve it is actually very simple solution to this approach:

  In iphone Case! IPhone sometimes because of a system error, you can not connect to the network, or automatically switch to the 3G network, when faced with this phenomenon, we only need the control center, turn airplane mode on, then turn off airplane mode, immediately You can return to normal.