This process will take you 2 minutes and you will be able to use Internet at maximum speed on your iPhone. (click here if you have an Android)

1. Click on the following link to download the APN config file in your iPhone: www.telsome.es/iphone
2. Go to Settings > General > Profiles > Select Telsome profile > Select install profile. If your iPhone uses iOS9, you have already enabled 4G. If your phone is previous to iOS9, follow the next step:
3. Go to Mobile Data > Options > Mobile data network > Access Point: type inet.es