It may solve the connection problem. Reset the phone: Send number 444 to alarm phone. Record: Send number 555 to alarm phone, begin to record. All you need is a working SIM card (NOT included!). Sound monitoring: Send number 666 to alarm phone.
eBay
New Mini GPS Car Tracker Real Time Tracking Anti-Theft Anti-lost Key Pet Locator Strong Magnetic Mount SIM Message Positioner
Aliexpress UK
Includes international SIM card. Alarm protection. User defined geo fence --Users can set a series of geofences on the map, and when the device calls the preset palette through the APP or from the app, it will give an alarm.
eBay
Mini GPS Tracker Smart Tag Compatible with iOS Find My APP Global Locator Anti-lost Finder for Car Pet Keys Wallet Suitcase iTag
Aliexpress UK
【Portable and Convenient】The smart key finder has a small design and is easy to carry. 【Compatibility】When you disconnect the anti-lost device on your phone, you can check the map location; Support iOS system and Android 4.3 or later (Bluetooth 4.0 required).
eBay
Mini A8 No GPS Tracker Locator RealTime Car Kids Pet GSM/GPRS/LBS Tracking Power Adapter With sOS Button USB Cable
Aliexpress UK
(Wireless WiFi 2.4G/5.8G and Bluetooth.). 【Portable】 - Our spy pen detector is small in size, about the size of a pen, and lightweight. With automatic detection functionality, it eliminates all suspicious risks and effectively prevents eavesdropping, taking photos, and personal privacy disclosure.
eBay
E96A Airtags For Android Phone Google Find My Network Tracker Global GPS Locator Finder For Cars Pets Wallet Keychain Anti Lost
Aliexpress UK
Compatibility: You can check the map location when disconnecting your phone's anti loss device; Supports iOS system and Android 4.3 or higher.
eBay
Xiaomi Bluetooth 5.0 GPS Tracker iOS Android Compatible Long Standby Stable Connection Wide Tracking Range For Car Kids Elderly
Aliexpress UK
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Colour: black.
eBay
4G GPS Tracker Car Locator Vehicle Voice Monitor Long Standby Magnet Waterproof 20000mAh Battery Real Time Position Free Web APP
Aliexpress UK
eBay
JIMIMX JM-VL03 4G Vehicle Tracker 9-90V GPS For Motorcycle Stop Engine Remote Scooter Tracking Car Against Theft LTE Locator DC
Aliexpress UK
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Battery capacity: Li-ion 400mah. Material: ABS. Colour: Black.
eBay
MiCODUS 4G GPS Tracker for Car Rastreador Mini Localizador ML100G 1500mAh Type-C Voice Monitor Vibration Alarm Free Tracking APP
Aliexpress UK