A Galaxy S24+ that drops calls or will not send texts is handled like any dual-SIM Samsung phone, but a few points are specific to it. It takes one nano-SIM and an eSIM, so the line chosen for each job matters. It supports Wi-Fi Calling, which is the best fix for a house with thick walls. And as a large phone that many people use for work, it often carries a work eSIM, whose profile can lapse independently of your personal line. Look at which line fails, then follow the symptom: dropped call, silent voicemail, stuck message, or no carrier.
Differential
Likely causes of “Samsung Galaxy S24+ cannot make calls or send messages”, and how to tell them apart
- 1
The work eSIM profile has lapsed
What separates it Calls fail on one number only and the other line is fine
How to confirm Ask the work carrier or IT to re-provision the eSIM
- 2
A weak signal at home
What separates it Calls drop in the same room
How to confirm Settings, Connections, Wi-Fi Calling
- 3
The wrong line set for messages
What separates it Texts leave from the other number
How to confirm Settings, Connections, SIM manager
- 4
A stuck chat feature
What separates it Messages stays on Sending
How to confirm Messages, Settings, Chat settings: off and on
- 5
A block or forwarding rule
What separates it Callers go to voicemail
How to confirm Phone, Settings, Blocked numbers and Call forwarding
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which line fails
- Calls, texts or both
- Carrier and eSIM or SIM
- The One UI version and patch date
Try in this order
0 of 6 completedFind the failing line
ReversibleSettings, Connections, SIM manager: test each line alone.
Re-register
ReversibleAirplane mode on and off.
Use Wi-Fi Calling
ReversibleSettings, Connections, Wi-Fi Calling.
Reset chat features
ReversibleMessages, Settings, Chat settings.
Check blocks
ReversiblePhone, Settings, Blocked numbers.
Reset network settings last
Reset / data riskSettings, General management, Reset.
Model-specific
What is true of this model and not of its siblings
- A work phone
- Many S24+ owners use a work eSIM beside a personal SIM; a lapsed work profile fails calls on that number only.
- Emergency calls only
- Only the carrier can fix a lapsed registration.
- Why dual-line phones fail in odd ways
- With two lines the phone has to decide which line to use for each call, text and data session, and a profile that lapsed silently on one line can leave the phone dialling out on the wrong one. SIM manager shows the defaults at a glance.
- Carrier apps and Samsung defaults
- If your carrier supplies its own Messages or Phone app, calls and texts may route differently from the default Samsung apps; check Settings, Apps, Choose default apps for the one in use.
- Emergency calls only
- This status is the phone telling you it can reach a tower for 911 but is not registered on your carrier. A restart sometimes clears it, but if it persists only the carrier can fix the registration.
Stop boundary
When this stops being a self-service repair
- !If Emergency calls only persists, call the carrier
- !If a second SIM fails in the S24+, book a Samsung modem check
- !If only one contact fails, check blocks
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Can the S24+ run two numbers?+
Yes, a nano-SIM and an eSIM.
Why do calls fail on my work line only?+
The work eSIM profile may need re-provisioning.
What is Wi-Fi Calling?+
Calls over Wi-Fi when cellular is weak.
Does a network reset delete messages?+
No.
Can I move my S24+ number to a new eSIM myself?+
Most carriers let you transfer in their app or on a call; do not delete the old profile until they confirm the new one is active.
Why do I hear an echo on calls on the S24+?+
The other person's speaker may be feeding back into their microphone, or your phone is on speaker phone; use the handset or earbuds.