Mobile device that has the following parts like a mobile phone, Usb charging port and rechargeable battery, two (2) 2-4G micro SimCard, GPRS, RAM ROM, BLE, Feature phone Keyboard, Feature phone LCD screen, Controller and Strong-Signal-Comparator that checks for the strongest and connects the device to the strongest.
12 pekerja bebas membida secara purata $602 untuk pekerjaan ini
There is a similar device developed, but without a screen and keyboard, I can send an example. We can also remake the card for your requirements. We will be happy to help you. Cost and time for example.