FitBark GPS 2nd Gen is a strong best for the lightest multi-carrier gps option pick for shoppers comparing 16 g multi-network lte-m gps and health tracker options in true cellular tracking under 34 grams. Key strengths noted in the product information are: Tied for the lightest tracker here and publishes a clear 5 lb minimum; Multi-carrier LTE-M support can provide more network choice than a single-carrier tracker. Buyers should still check sizing, current price, and retailer availability before ordering.
FitBark GPS 2nd Gen is worth considering if best for the lightest multi-carrier gps option is your priority in true cellular tracking under 34 grams. Check fit, current price, and retailer availability before buying.
Skip it if continuous live gps is rated for only up to six hours is a dealbreaker, or if your pet needs a different fit, size range, or retailer return policy.
Compare related options, then check current details with the retailer.
Fi
Fi Mini weighs only 16 g and is explicitly positioned for puppies, small dogs, and cats, with real-time GPS, Verizon LTE-M, IP68 protection, and flexible collar or harness attachments. Its latest comparison page advertises up to six weeks, or up to three months with a Fi Base, but those are conditional maximums; service is membership-based and the public brand review profile is unusually polarized.
Petloc8
Petloc8 Mini weighs 25 g including its silicone attachment and uses GPS, 4G LTE Cat 1, Wi-Fi, Bluetooth, and an embedded roaming SIM. Five-second live updates, service-included purchase options, an eight-image gallery, and a product-level rating make it well evidenced, but it is officially intended for pets above 4 kg and the product page contains conflicting two-week versus seven-day battery language; the Mini comparison and FAQ consistently support seven days.
PAJ GPS
PAJ's PET Finder 4G Mini is a true GPS tracker with its own European 4G SIM, Bluetooth-assisted indoor power saving, a 33.1 g body, and a 3 kg minimum dog weight. Its purchase includes more than two years of service and the official page provides unusually complete technical and media evidence, but it is the heaviest tracker in this lightweight ranking, continuous tracking lasts only one to two days, and it is not designed for U.S. cellular use.
Molly&Cody
Tracker T1 is a roughly 25 g pet tracker that officially lists GPS, Wi-Fi, LBS, Bluetooth, and—on its technical page—cellular positioning. Its standard battery claim is up to six days and its official gallery and video are complete, but Molly&Cody does not disclose the cellular generation, radio bands, partner carriers, supported countries, minimum pet weight, or full subscription matrix. It therefore ranks only as a conditional option after buyers confirm local network support directly with the brand.
Weenect
Weenect XS uses GPS, Galileo, BeiDou, and GLONASS, then sends positions through an integrated multi-network SIM rather than waiting for a nearby phone. Its 27 g body, one-second Superlive mode, 170-plus-country claim, and unusually large review signal are compelling, although continuous tracking cuts the battery estimate to about two days and every tracker needs its own subscription.
Fi
An integrated GPS/LTE-M dog collar with a night light, activity and AI behavior trends, and exceptionally long battery claims when the dog stays near its Fi Base. Outdoor-heavy use is shorter, an active membership is required, and Series 3+ has no satellite link for areas without AT&T LTE-M coverage.
