Smartphones are getting larger and slicker all the time. Some of us still prefer watching videos and play games on a larger display. The DIZAUL 12″ Smartphone Magnifier might help. It is an affordable accessory that doubles the size of your screen. It is designed to fit most iOS and Android smartphones.
You can always add a Bluetooth keyboard to get more serious work done on your phone. This iPhone Screen Magnifier has a lightweight, foldable design. Costs under $20 at this time.