3 ms·

Good handheld GPS units are expensive. Plus, you look eccentric - to say the least - carrying a handheld GPS unit in addition to your phone.

• cr0sh 7y ago
  Have you considered building your own phone? Sure it won't be very stylish - nor will it be slim - but all the parts are out there with more than enough example code to hack together exactly the phone you want. I'm seriously considering going this route for my next phone, since 4G modules recently became more widely available and much lower in price. But even 3G would suffice for my needs. I'm just wanting a "smart phone" which I have complete control over - or close to it. I understand not everyone has the option or skills to build such a phone, but if you do (or are interested) - google around for DIY phones based on the Raspberry Pi (especially the Zero W), or the Arduino (using a variety of processors, though the original Arduino Phone was made with an ATMega328P iirc). For your use-case, either one of the more powerful "standard" cores could be used (ATMega2560, ATMega644, SAM3X8E) - or maybe something based off the ESP line (ESP-12 or 32 would be my choice). A small 3G GSM module, plus a GPS and maybe an IMU, some kind of keypad, and a small OLED screen or something - keep everything at a 3.7 volt level and run it off a LiPo cell(s). With a bit of luck, you could probably fit everything into something about the size of an Altoids tin.