The quick answer

• Calls: usually yes on the carrier it was sold for; check the IMEI
• Software: both stuck on Android 9, no security updates
• Headphone jack and (on the V30) a quality DAC still appeal to music fans
• OK as a backup; not for banking

Calls after the 3G shutdown

Both phones support VoLTE, and the US carrier versions were approved by the carriers that sold them. Unlocked and international versions, or moving one to a different carrier, are where problems tend to show up.

How to check yours

1. Find the IMEI: dial *#06#, or look in the phone's settings or under the battery.
2. Enter it in your carrier's compatibility checker. Every major carrier and most prepaid brands have one.
3. If it isn't supported, it's usually missing approval for VoLTE (calls over 4G), which every US phone now needs.

The software limit: Android 9

LG's last updates gave both phones Android 9. With LG out of the phone business, there won't be more. Most apps still install, but banking apps may drop support first.

Who it still works for

Music fans who want the V30's headphone jack and audio quality, or anyone needing a cheap spare Android.

If you're replacing it

A new moto g 2026 or Galaxy A17 costs little, gets years of updates, and several carriers give them away when you switch. Pair it with a low-cost plan such as Mint Mobile ($15 a month for 6GB on a 12-month term) or Visible ($25 for unlimited, taxes included).