Technician helping troubleshoot Motorola phone screen brightness not working

Steve H.

Reviewed for technical accuracy

Specialities: LG “No Service” / “Searching for service,” can’t detect carrier, Emergency calls only, SIM not recognized, mobile data not working.

LG not connecting to mobile networks? Common reasons + what to check first (Airplane Mode, SIM tray, coverage, network mode)

Technician avatar Technician
We can check this safely. When an LG phone can’t find a network, it usually comes down to one of four things: coverage where you are, a SIM/eSIM issue, a settings switch (like Airplane Mode), or the phone getting “stuck” after an update.

Trust moment: I don’t want you to do anything risky like factory resets or removing accounts. We’ll start with simple checks that don’t erase anything.

First: what exactly does your screen show — No Service, Searching, Emergency calls only, or Not registered?
Customer
It says “No Service” and sometimes it just keeps searching. I’m worried I won’t be able to call anyone.
Technician avatar Technician
That’s understandable. Let’s do one quick “environment” check before we touch settings.

Are you in your usual location, and do other phones on the same carrier have signal right now (even one family member’s phone)? If you’re not sure, that’s okay — just tell me whether this started at home or after you went somewhere new.
Customer
I’m at home. My spouse’s phone has signal. Mine used to work here.
Technician avatar Technician
Good — that suggests it’s not a local outage. Next, we check the “easy to miss” switches.

Please look at the top of the screen: do you see an airplane icon at all? Even if it’s off, a quick toggle can refresh the radio connection.

Also, did this begin right after anything changed — a system update, a dropped phone, a new SIM card, or switching carriers?
Customer
No airplane icon. It started this morning. I did get a software update a few days ago, but it was fine after that.
Technician avatar Technician
Thanks — updates can be related, but we should rule out the simplest physical cause first.

Trust moment: I don’t want you forcing the SIM tray or scratching anything. We’re just confirming basics.

Two quick questions:
• Does your LG use a physical SIM (a little tray), or is it eSIM?
• Do you see any message like No SIM or SIM not detected?
Customer
It has a SIM tray. I don’t see “No SIM,” just No Service. The bars are empty.
Technician avatar Technician
Empty bars + No Service usually means the phone isn’t registering on the carrier network right now.

A safe “refresh” test is: turn Airplane Mode on for about 10 seconds, then off. This doesn’t erase anything — it just restarts the wireless connection.

After you do that, does it change to anything else (like “Searching,” “LTE/4G,” or “Emergency calls only”)?
Customer
I tried that and it says “Searching…” for a while, then goes back to No Service.
Technician avatar Technician
That behavior is useful — it means the phone is trying to register, but something blocks it.

Next quick check: is Mobile data turned on? (Some LG phones let calls work but keep data off; other times it can affect how the phone tries to connect.)

Also, if you open Settings and search for Network, do you see something like Network operators or Choose network set to Automatic?
Customer
Mobile data is on. I found network operators and it looks like it’s on automatic, but it doesn’t show my carrier name.
Technician avatar Technician
If it can’t even list the carrier, I think in two directions:
• The phone is not seeing a usable network type (for example, a network mode mismatch), or
• The SIM is not being read cleanly (even if it doesn’t say “No SIM”).

Trust moment: Let’s not change a lot at once. One safe check: have you traveled recently or is Roaming turned off and you’re near a border? If not, we focus on SIM/contact or network mode clues.
Customer
No travel. I’m not near a border. I’m nervous about touching the SIM tray.
Technician avatar Technician
That’s completely okay. You don’t have to remove anything right now.

A very gentle “no tools” check: restart the phone once (a normal restart). After it powers back on, watch the top for 1–2 minutes and note if it ever shows LTE/4G/5G or a carrier name, even briefly.

If it flashes a network then drops, that often points to registration trouble (carrier side, SIM provisioning, or a setting like preferred network type).
Customer
I restarted. It showed bars for a moment and then went back to No Service.
Technician avatar Technician
That “brief bars then drop” is a strong clue. It suggests the phone can see a network, but can’t stay registered.

The next safe step is to collect evidence before any deeper changes:
• Does it happen everywhere (step outside for one minute), or only inside the house?
• If you have another phone available, does your SIM work in that phone? (This is just a test idea — only if you’re comfortable.)
• If you don’t want to move the SIM, write down your carrier and the exact message you see (“No Service” vs “Emergency calls only”).

With those details, you can tell whether it’s a SIM/carrier registration issue or an LG network setting mismatch — without guessing.
Customer
Okay, I can step outside and see if it changes, and I’ll write down the exact message. Thank you for keeping it simple.

Quick answer: the accepted fix

Accepted first approach when an LG phone can’t find networks: confirm it’s not a local outage, then do a few safe “refresh + comparison” checks before changing advanced settings.

What usually helps most (safe checks):
• Compare locations: test indoors vs outside briefly to rule out building interference.
• Toggle Airplane Mode once and do a normal restart to refresh registration.
• Confirm Mobile data is on and network selection is set to Automatic (don’t switch multiple options).
• Watch for message changes (“Searching,” “Emergency calls only,” carrier name flashes) — those clues point to the cause.
• If comfortable, test the SIM in another phone (or another SIM in your LG) to separate SIM/carrier issues from the device.


Why an iPhone stops charging (and why it can start suddenly)

Most “sudden” iPhone not charging cases come down to a simple change: a worn cable, a weak adapter, lint in the port, or a wireless pad that loses alignment. It can also happen after an iOS update when the phone runs background tasks, warms up, or behaves differently for a day or two. Another common reason is protection: if the iPhone detects moisture in the Lightning/USB-C connector or the phone gets too hot, charging can pause. If charging consistently stops around 80%, it may be a normal battery protection feature rather than a failure.

What to check first: cable vs port vs wireless pad vs iOS settings

Start with safe comparisons. Test a different outlet and power adapter, then try a different cable if possible. If wired charging shows nothing at all (no sound, no bolt), look for a loose fit or lint in the port and consider a wireless “comparison test” (MagSafe/Qi) with the case removed. If the iPhone charges wirelessly but not by cable, the issue is usually the cable/adapter/port contact. If it charges but pauses at 80% or says “charging on hold,” settings like Optimized Battery Charging, heat, or background activity may be involved.

iPhone not charging — gentle troubleshooting tips for seniors

Most charging problems are cable/adapter wear, lint in the port, moisture alerts, heat protection, or a wireless pad alignment issue.

Best approach: change one thing at a time. Start by comparing a different outlet and power adapter, then try a known-good cable. Check the port with a light for obvious lint and avoid sharp tools. If wireless charging works (especially with the case off) but the cable doesn’t, that’s a strong clue. If the phone shows a moisture warning, stop charging and let everything dry naturally.

Disclaimer: This information is AI-generated and intended for general guidance only. Avoid making multiple system changes at once. For device-specific steps, consult a verified expert on Whizz-Tech or the manufacturer’s support before making decisions.

Additional troubleshooting options


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FAQ

Why did my LG phone lose service all of a sudden?

This can happen after a restart, an update, or a brief carrier registration problem. It can also be caused by weak coverage indoors, a SIM that isn’t seating perfectly, or a network setting that changed by accident. Checking whether other phones on the same carrier have signal is a helpful first clue. If your phone briefly shows bars then drops, write that down—it’s meaningful.

Did this happen after an Android update on my LG?

It can. Sometimes the phone’s network connection gets “stuck” and keeps searching even in a good coverage area. A normal restart and a single Airplane Mode toggle are safe ways to test that. If nothing changes, it may be a SIM/carrier provisioning issue rather than the update itself. Avoid big resets until you’ve done simple comparisons.

Is “No Service” a settings issue or hardware damage?

It can be either, but there are clues. If other phones work in the same spot and your LG never finds a carrier, start by checking Airplane Mode, network selection on Automatic, and SIM status. If the phone was dropped or the SIM tray was recently opened, the SIM contact or antenna connection can be involved. Testing the SIM in another phone (if comfortable) separates SIM/carrier from device issues.

Can I check this safely at home without wiping my phone?

Yes. You can compare inside vs outside, restart once, and toggle Airplane Mode without losing data. You can also note the exact message (“Searching,” “Emergency calls only,” or “No Service”) and whether it ever shows your carrier name. If you choose to test the SIM, do it gently and only if you feel confident. Factory resets are rarely the first safe step.

Sources

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