How do I fix a replacement cordless handset that rings but drops the call when lifted?
Answer
This usually means the spare handset is not fully registered to the base, or the base/handset power state is confused—not that the phone line itself is dead. Power-cycle the base and handset batteries, then re-register handset 4 using the manufacturer’s pairing steps.
Before you start: stop right away if…
- Unplug base power before long battery removals; do not force connectors or open sealed battery packs.
- Do not share account passwords if your phone system also ties to an online account; ignore unexpected paid unlock offers.
Follow these steps
Power-cycle the base and handset 4
Remove the batteries from handset 4 for about 5 minutes. Unplug the main base from power for about 1 minute, then plug the base back in. Reinstall the batteries in handset 4 and place it on the base to charge briefly.
You should see: The base and handset reboot cleanly and the handset display returns to a normal idle state.
Try a shorter reset if still failing
If calls still drop, unplug the base again, remove the battery from handset 4, wait about 30 seconds, plug the base back in, then reinstall the battery and reseat the handset.
You should see: The handset reconnects to the base without an immediate Line in use fault.
Re-register the spare handset
Follow your phone’s manual to register or link handset 4 to the main base (often a Find handset / Register sequence on the base, then a confirm step on the handset). Complete registration before testing another live call.
You should see: The handset shows registered/linked status, or the base confirms the handset number.
Test an incoming call
Place a test call to the line, let handset 4 ring, then lift it and confirm you can talk and hang up normally. Compare with another handset if available.
You should see: Handset 4 answers and holds the call without disconnecting when lifted.
Check line and base next if registration fails
If registration never completes or every handset fails, test the wall jack with a known-good corded phone and contact the cordless-phone maker with the base model and the Line in use / disconnect symptom.
You should see: You isolate a base/registration fault versus a true phone-line problem.
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Extra tips
What to look for: Incoming ring on handset 4, immediate disconnect when lifted, a Line in use message or icon, and whether other handsets on the same base still work normally.
Before you change anything: Keep the base model and handset number (#4) handy. Note whether other handsets can answer calls. Have spare charged batteries if your model uses removable packs. Unplug only the phone base power and handset batteries as directed—avoid cutting the phone line cable unless instructed.