Let the phone always maintain 4G high-speed networking status

As some 4G networks are still in the construction optimization stage, many 4G mobile phones often lose 4G signals and automatically switch to 3G or even 2G mode “low speed”. So, how to maintain the high-speed networking state of 4G mode in the area with 4G signal? The lost 4G signal is the same as the original 3G era. In some areas (such as a shopping mall), there is clearly 4G signal coverage, but the mobile phone often automatically switches to 3G or even 2G mode, and the high-speed 4G network does not need to be connected to the turtle. The reason is that the instantaneous 4G network is lost, causing the system to automatically access other networks. When luck is good, the phone will be connected to the 4G signal again after a while, and the phone will always maintain the next-class 3G or even 2G network when the luck is not good. When faced with the above problems, we can re-access the 4G network in three ways. Switching flight mode If you are not afraid to miss an important call within a minute, we can switch the phone to flight mode and turn off the flight mode after the flight mode icon appears on the signal bar. At this point, the phone will re-search the current network, and in the case of 4G signals, it will naturally re-enter 4G mode. Disadvantages: Lose signal when you turn off airplane mode, miss phone text search network operator If you are not in a hurry to connect, you can enter “Set →Mobile Network", ensure the mode is set to "4G/3G/2G (automatic In the case of & rdquo; (Figure 1), click on "network operator", about 2 to 3 minutes will list all currently available networks, click on the "China Mobile 4G", after the phone will force Access to the 4G network (Figure 2). Disadvantages: It takes a long time to search the carrier network. During this period, you can't start the 4G in the engineering mode. If you don't want to miss the call, you don't bother to wait. You can restart the 4G network through the engineering mode. Take the OPPO mobile phone as an example, enter “ldquo;*#*#4636#*#*” in the dial panel to enter the project mode (Fig. 3), and “set the preferred network type” in the mobile phone information to “ld”; LTE only” (Fig. 4), then enter the mobile phone & ldquo; set → mobile network & rdquo;, change the network mode from "only 4G" to "4G/3G/2G (automatic)". Disadvantages: The code is long, it is not very good to remember that the small prompt can not be called normally in 4G mode only. In the engineering mode, LTE only is modified to let the network automatically lock the 4G signal, and it is guaranteed to change back to 4G/3G/2G in the setting. Normal communication. Please be assured that the phone has locked the 4G signal. This article comes from [System Home] www.xp85.com This article comes from [System Home] www.xp85.com