Hello Friends..
As we see, 4G SIM available and we want to use that sim in 3G Smart phone..
This is possible only those smartphone that use Mediatek Chipset Devices.
Follow Below steps to use 4G Sim in 3G support Smartphone.
1. Download & Install MTK Engineering Mode App from Play StoreBefore use this app
please follow below steps carefully. Single mistake may damage your smart phone.
2. Open MTK Enginnering Mode
3. Click on "MTK Setting"
4. Select "Preferred Network" Option
5. Select 4G "LTE/WCDMA/GSM" Option
6. Save Setting
7. Reboot Smart Phone
8. Insert 4G Sim in Smart Phone
Yeeaaaaahhh!!!! Now we can use 4G Sim in 3G Smart phone....
Note: 3G Smartphone now only able to use 4G sim but speed will be applicable as per 3G Network.Because this application just visualize our phone as 4G Phone.
