Choosing between an Apple Watch with GPS-only or GPS + Cellular connectivity is one of the key decisions buyers face, alongside colour and band options, according to Engadget. Both versions share identical core features, including health monitoring and workout tracking, but the cellular model allows the watch to send messages, take calls, receive notifications and stream music without an iPhone nearby, offering greater independence, particularly for children who can use one without needing a full smartphone.

Cellular connectivity was first introduced with the Apple Watch Series 3 and connects automatically to the SIM already registered to the owner's iPhone, requiring no separate setup. However, this convenience comes at a cost: upgrading to a cellular model typically adds $100 to the price of standard Apple Watch models, plus a possible carrier fee, though titanium and Ultra versions include cellular as standard. Battery life also suffers considerably when cellular is in use, meaning it is best suited to short periods away from an iPhone rather than a full day out.