If you want to know details about your phone & sim card 3G to 4G Switch will help you in getting all the details at on the page. You can also know you Internet Download/Upload Speed using 3G to 4G Switch. App Key Features: 1. Check Internet Downloading & Uploading Speed. 2. Track Unknown Mobile Number. 3. Get SIM card hidden Details. 4. Check your phone hardware configurations. Note - 3G to 4G Switch - Simulator does not change your device Hardware or Software configuration we just help in searching for network switch page in your phone from where you can switch 3G to 4G Network.