GPS Tracker Teardown: Packed with Technology

An Ali-express find. So cheap! Unfortunately it only works with 2G networks which have long been switched off where I live. However, an excellent opportunity to study some state-of-the-art silicon which contains Digital, interface, RF and even voltage regulation on a single die: The product is based around this single-die GSM phone: The RDA Microelectronics RDA8955L. Left side is RF Middle is…