Optimum Mobile is a cable company-owned MVNO that uses T-Mobile’s cellular network to provide you with coverage. After you install your SIM card or eSIM profile into your device you may find that you still can’t access the internet, use hotspot (if your plan supports it), or send or receive MMS picture messages on Optimum Mobile.
For the fastest data speeds, working hotspot, and working MMS/group messages you have to have the proper APN profile setup on your device. Use the settings shown below to configure your device to work with Optimum.
Not sure where to begin? I have a step by step guide on how to setup your APN settings for both Android and iOS devices. You can follow that guide to input the settings found below into your APN profile.
Be sure you copy exactly what you see. If you do not, and have you extra spaces or an extra character that shouldn’t be there the APN won’t work right, might not even save, and you won’t be able to properly connect to Optimum Mobile.