Every true GPS tracker needs a way to send its location to your phone, and for most that means a cellular connection — so yes, a SIM is involved somewhere. The real question is whether you have to deal with it. There are three setups on the market:
- Bring-your-own-SIM trackers: cheap upfront, but you buy a SIM, pick a data plan, manage top-ups, and troubleshoot coverage yourself. More hassle than most riders want.
- Subscription trackers: the SIM is built in and the company manages it — in exchange for a monthly fee, usually $5-25, forever.
- Pay-once trackers: connectivity is built in and prepaid as part of the purchase price. Nothing to insert, activate, or renew — you pair the app and go.
Note that Bluetooth tags like AirTags skip cellular entirely, but they aren't real-time GPS trackers — they only update when a compatible phone happens to pass nearby, which is a big gap in a parking garage at 3 a.m.
For theft protection, we recommend the third category. The Stealth tracker works this way: no SIM card to buy, no data plan to manage, no monthly fee — just the free app showing your bike's live location and sending movement alerts.





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