Many things that are often complained of by Android smartphone users, one of the most complained is about the unstable signal captured by an Android smartphone . Changes often occur between Edge, 3G, HSDPA and 4G LTE network connection speeds, while being absorbed in surfing in cyberspace with 4G LTE speeds suddenly changing to HSDPA or EDGE and as a result access speeds slow down.
Not only is it caused by 4G LTE and HSDPA coverage that has not been evenly distributed, or the distance of the base station, it turns out that Android smartphones must also be made so that the Android network connection and operator signal remain stable.
Here are a few simple steps that can be used to make Android smartphone signals stronger. Keep in mind, these tips are not as signal amplifiers but rather are aimed at stabilizing signals captured by Android smartphones. Generally Android smartphones already provide a signal settings menu as in the settings feature, but there are some Androids that hide it. If you are having trouble finding this feature, follow these steps:
Turn on your Android smartphone, run the dialer menu (call) then press the following code * # * # 4636 # * # *
Without having to press the call button, on the smartphone screen an information display will appear in the form of: Phone information, Battery Information, Statistics Usage and Wi-fi information. Select "Phone information"
In the Phone Information menu all information about the IMEI, Phone Number, Network and signal connection will appear on your Android smartphone. This includes displaying signal strength, location, internet data connection information and so on.
To test the signal connection, try to do a "run ping test" , to change the network connection from "preffered" to "only" select the "set preferred network type" menu , there are many options you want WCDMA preferred, GSM Only (Edge, GPRS), WCDMA only (HSDPA, HSDPA +, 3G), Global, LTE Only and others.
If you want an Android Network Connection on HSDPA - 3G then select the settings atWCDMA only , and vice versa. And if you want to get a smooth Android 4G LTE Network Connection , choose LTE only, but the obstacle in choosing LTE Only is you won't be able to receive and make phone and SMS calls. Then refresh and wait a while then our network will be reset.
Noteworthy is that if you are in a location with an Android network connection whose coverage area has a good 4G LTE and HSDPA-3G coverage area, you should set LTE only or WCDMA only, but if you only cover the network on Edge-GPRS then set it to GSM only . Forced signal is only connected to HSDPA (3G, H +) or to EDGE (GPRS)of course this will cause us to have to change the connection settings according to the conditions of the area that we go to. If you don't change it then you will lose the signal when entering an area with different signal conditions (4G LTE to HSDPA or EDGE / vice versa) .
The advantage of this manual signal capture setting will make the network connection more stable, such as only running on 4G LTE or HSDPA or only on EDGE, depending on user needs. Another advantage is saving battery and reducing heat because the android system does not have to keep looking for a stable signal connection located in EDGE, HSDPA or 4G LTE which requires excessive battery consumption.

