If your carrier refuses to unlock the device (or you bought it second-hand and don't know the original owner), you can use a reputable third-party service.
If you insert a foreign SIM and no box appears, your router might already be unlocked. Check the "Network Status"—if it shows the new carrier's name, you're good to go! Final Thoughts
Once unlocked, consider adding a high-gain external 5G antenna to the TS-9 ports to maximize your speeds!
Use local 5G SIM cards abroad to avoid massive roaming charges.