Glo Calls Not Connecting: Causes and Fixes
- Your phone says the call failed or shows a message and then drops back.
- The line rings but the other person never hears it.
- You hear a busy tone or a message about the number.
- Calls fail only to one number or one network.
- Calls work in some places and not in others.
A call that will not connect is more than an annoyance, especially when it is an urgent one. With Glo, as with other networks, the cause may be the signal, your balance, the other person’s line or a setting on your phone. Sorting these out in order will usually reveal the culprit quickly.
Below is a practical guide to the common causes and fixes. If a particular step does not apply to your phone, look for the closest option in your settings.
Check the basics first
| 1 | Dial *310# to confirm you have enough airtime. |
| 2 | Check that you have signal bars and a network name. |
| 3 | Turn airplane mode on and off. |
| 4 | Restart the phone. |
| 5 | Try another number to see if the problem is general. |
Is it your line or theirs
Call two or three different numbers on different networks. If only one number fails, the problem may be with that person’s line. If all calls fail, the problem is yours. Ask the other person to try calling you as well, because incoming calls tell you whether your phone is reachable.
Common causes
Some tariffs need a minimum balance to connect a call.
Calls need a stable connection. Move to a better spot.
A setting may block calls or send them elsewhere.
Missing digits or the wrong country code can stop a call.
Busy hours can cause failed attempts. Try again after a few minutes.
A damaged SIM or a phone problem can break voice service.
Check call settings
- Make sure call barring is not active.
- Check forwarding and turn it off if you did not set it up.
- Check that your phone is not in do not disturb mode that blocks calls.
- Check that you have chosen the right SIM for calls on a dual SIM phone.
- Turn off any call-blocking app you installed and test again.
Network mode and voice over LTE
Some phones switch to 4G for data and then struggle to place voice calls if voice over LTE is not set up. Try switching the network mode to automatic or to 3G and 2G for voice, then test a call. If voice over LTE is an option on your phone, check whether it is on or off and try the other setting.
Test the SIM
Place the SIM in another phone and try a call. If calls work there, your first phone has a settings or hardware problem. If calls still fail, ask Glo to check your line or replace the SIM.
Calls only to one network
When calls to one network fail and others work, the issue may be interconnection between networks at that time. This kind of fault is outside your phone. Try again later, use a messaging app over data or ask the person to call you.
When to contact Glo
- Calls fail on all numbers in several places.
- The problem continues after a restart and a SIM test.
- You believe a barring or restriction is on your line.
- You are charged for calls that did not connect.
- Your line shows no network for a long time.
Questions people ask
The call may have been placed but the audio path failed. Try again, check the signal and test with another number.
Calls that do not connect should not be charged, but check your balance if you suspect a charge.
It rarely does, but a phone with a software problem may behave oddly. Restart it.
Emergency calls and backup options
If you urgently need to reach someone and normal calls fail, try a messaging app over WiFi, send a text or ask another person to place the call. Emergency numbers can often be dialled even when your normal service is limited, but do not rely on this for planning. Keep a second SIM or a nearby friend as a backup so that you are never stranded.
Wrap up
Check your balance, signal and settings, test other numbers and a second phone, then report to Glo with details. With this order of checks, you will fix most call problems yourself.