Will it work in your country? The Amazon.de listing of the European L71 gives 6 LTE FDD and 4 LTE TDD bands, including the 800 MHz band 20 that most EU networks use outside cities; Retevis does not publish a band list on its own page.
Try the push-to-talk apps on the L71 These services list the L71 as supported. Pick one and try what it can do.
The radio's keys work too: PTT plays the next call (hold it to talk), the knob or ▲▼ change the group, ◀▶ switch the app’s screens, the red key stops.
About Zello → Ports and buttons Turn the radio to see every side, the top and the bottom. Tap a row to find the part.
Front Left Back Right Top Bottom
PTT key Left side, large dotted key Screen and record key Left side, above the PTT key Volume keys Left side, + and − below the PTT key SOS key Top right, orange; short press switches the keypad, long press sends SOS Front keys Three keys under the screen: call, menu and power Earphone connector Right side, under a cover Charging USB-C on the bottom Battery and SIM Battery forms the back; two SIM slots under the battery door
How big is it? The L71 next to other radios, to scale. Pick up to three to compare.
Full specifications Values come from the sources listed at the end of the page. Where they disagree, both values are shown.
mm, g in, oz
Network LTE FDD bands (EU version) B1 B3 B7 B8 B20 B28 (listed as B28A and B28B) LTE TDD bands (EU version) B38 B39 B40 B41 3G (WCDMA) B1 B8 2G (GSM) 1800 / 900 MHz (listed as B3 and B8) SIM Two SIM cards, both on standby (SIM size not published)
System and apps Operating system Android 10 PTT platforms named Zello, and Retevis's own PoC management platform (retevispoc.com) Other PTT apps Retevis names Zello support and does not say whether other APK files can be installed Talks to Other L71 radios, and the Retevis RB20 and L61
Screen and battery Screen Color screen, 1.77 inches; resolution not published Battery 4,000 mAh Battery life (published figure) 72 hours on standby and 28 hours of use; USB-C fast charging
Build Water and dust rating IP54 (ABS plastic body) Weight 181 gSources differ Size 122 × 61.7 × 34 mm (height × width × depth)Sources differ
Keys and connectors SOS and alarms SOS alerts; a shop listing also names a dedicated SOS button and man-down detection Call types Single, group and friend calls through Retevis's free management platform
Connectivity Wi-Fi Wi-Fi supported (standard and bands not published) Bluetooth Bluetooth for headsets (version not published) Satellite positioning GPS tracking (satellite systems not published)
Certification and warranty Certifications Not listed on the L71 page; Retevis says all its products meet international certifications such as FCC and CE Warranty 2 years on the radio case, 1 year on accessories (Amazon listing)
Where sources disagree Weight 181 g · 310 g (“Item weight” on the Amazon.de listing) Size, mm 122 × 61.7 × 34 · 127 × 41.7 × 34 (image text on Amazon.es) Sources 
