What Does the 305 Network Code Mean for My Calls? or Why Am I Seeing the 305 Network Code on My Phone

Kinda techy but—305 network code is MNC (Mobile Network Code) for certain carriers. It’s usually T-Mobile or a partner network.

If you’re not on T-Mobile, your phone might be roaming. Dropped calls could be from handoff issues between networks.

Try dialing *#0011# (on Samsung) to see your network info. Or use NetMonster app for more details.