Technician helping troubleshoot Motorola phone screen brightness not working

Steve H.

Reviewed for technical accuracy

Specialities: Android hotspot disconnecting after updates, iPhone Personal Hotspot dropping, tethering turns off when screen locks, Battery Saver/Data Saver conflicts.

Hotspot drops the connection? Common reasons + what to check first (updates, power saving, signal, device limits)

Technician avatar Technician
I’m here with you. When a phone hotspot disconnects over and over, it can make you feel like nothing is stable — especially if you’re relying on it for a laptop or tablet.

Trust moment: We’ll keep this gentle. No factory resets, no deleting anything, and no “mystery fixes.” We’ll just identify what category the problem is in.

First question (this helps a lot): did this start after something changed — a phone update, a new SIM/eSIM, a new laptop, or a new place in the house?
Customer
It started this week after an update. Now my laptop connects and then it drops. I’m not technical. I just need it to stop disconnecting.
Technician avatar Technician
That timing is important — updates sometimes change hotspot behavior without telling you, especially around battery saving and “turn off hotspot when not in use.”

Quick check so we don’t chase the wrong thing:
• Is your phone Android or iPhone?
• Does it drop mainly when the phone screen goes dark/locks, or even while the screen is on?
• On the laptop, does it say Disconnected, or Connected but no internet?
Customer
Android. It seems worse when the screen locks. The laptop sometimes says connected but no internet, then it disconnects.
Technician avatar Technician
That “screen lock = drop” detail often points to power management. Many phones try to protect the battery by limiting background sharing when the display is off.

Before changing anything, let’s confirm what’s safe to test:
1) When it drops, does your phone still have normal mobile data working on the phone itself?
2) Is Battery Saver (or Power Saving Mode) usually on?
3) Is Data Saver on, or any setting that limits background data?
Customer
Mobile data on the phone still works. I do keep Battery Saver on because the battery isn’t great. I’m not sure about Data Saver.
Technician avatar Technician
You’re not alone — Battery Saver is a very common reason tethering becomes unstable after updates.

Trust moment: I don’t want you toggling lots of settings and then wondering what changed. We’ll do “one small check at a time.”

Next, let’s rule out the environment side (it’s easy to miss):
• Are you in a room where your phone signal is weaker (back room, basement)?
• Does it behave better near a window or a different part of the house?
Customer
Yes, the back room has weaker signal. It’s better near the window. But I need the hotspot in the back room for my laptop.
Technician avatar Technician
That makes sense. A hotspot is only as stable as the phone’s mobile signal — if the cellular connection is “wobbling,” the laptop experiences it like repeated disconnects.

Two low-risk observations that help pinpoint it:
• Does it drop during specific activities (video calls, downloads), or even while just reading email?
• Does the phone get noticeably warm when sharing internet?
Customer
It drops even while I’m just reading. The phone can get warm, yes. Sometimes it reconnects by itself, sometimes not.
Technician avatar Technician
Warmth matters because phones may quietly limit hotspot performance to cool down. Also, some Android builds become extra aggressive when Battery Saver is on — especially when the screen locks.

A few clarifying checks (still safe, no “big steps”):
• Is the phone plugged in while you use hotspot, or usually on battery?
• How many devices connect (only the laptop, or more)?
• Does the laptop ever show “Saved” or keep asking for the hotspot password again?
Customer
Usually just the laptop. Sometimes it’s on battery. It doesn’t ask for the password again, it just drops and I have to click connect.
Technician avatar Technician
Good — that suggests it’s not a password/forget-network loop. This is more like the phone stops sharing for a moment, or the laptop loses the route to the internet.

One more “when it happens” question:
If you keep the phone awake (screen on) for a few minutes, does it stay connected longer? People often notice: screen on = stable, screen off = drops.

If that’s true, it strongly points to a power-saving rule rather than a broken hotspot feature.
Customer
Yes, it’s definitely more stable when the screen stays on. As soon as it locks, it starts acting up again.
Technician avatar Technician
That’s a very clear signal. The simplest explanation is: the phone is being told to conserve power when idle, and hotspot sharing is treated like a background feature once the screen locks.

Trust moment: I don’t want you to chase advanced “tweaks.” The safest direction is to check a small set of settings that commonly cause this after updates, and to confirm the signal/heat factors we already spotted.

Also, do you remember if you turned on Battery Saver recently because the battery wasn’t lasting?
Customer
Yes, I turned Battery Saver on recently. So is this settings or hardware? I’m worried my phone is failing.
Technician avatar Technician
With what you described (screen lock triggers it, phone data still works, better near the window), hardware failure is less likely. This usually comes down to update + power saving + weak signal, sometimes with heat making it worse.

If you want the safest “what to check first” list right now, it’s this:
• Confirm whether the hotspot stays stable when the phone is plugged in (less aggressive power saving).
• Note whether Battery Saver/Data Saver is on during hotspot use (those can interrupt tethering).
• Compare one test near the window vs. the back room (signal strength clue).
• Watch for heat — if it gets hot, stability often drops until it cools.

If you tell me which of those changes the behavior the most, we can narrow it without doing anything drastic.
Customer
Okay, that feels manageable. I’ll try it plugged in and pay attention to Battery Saver and where I’m sitting. If it’s still dropping, I’ll come back with what I notice.

Quick answer: the accepted fix

Accepted first approach when a mobile hotspot keeps disconnecting: treat it like a stability diagnosis (power saving + signal + heat) before assuming something is broken.

What usually helps you narrow the cause safely:
• Check whether drops happen mainly when the phone screen locks (often linked to Battery Saver/Data Saver behavior).
• Compare hotspot stability in a spot with stronger mobile signal versus the problem room (signal changes can look like disconnects).
• Test once while the phone is plugged in vs. on battery (power rules can be different).
• Watch for heat; if the phone warms up, sharing may pause or weaken until it cools.
• If the issue began after an OS update, confirm the update finished and avoid changing many settings at once.

Why a hotspot can start disconnecting suddenly (even if it worked before)

A hotspot is your phone sharing its mobile data over Wi-Fi. If your phone’s cellular signal is weaker in one room, the shared connection can “blink” and your laptop experiences it as repeated dropouts. This can start right after an update because power saving rules change, or because the phone begins managing background features more aggressively when the screen locks. Heat can also reduce stability, especially if the phone is working hard or charging. The safest goal is to identify whether the trigger is signal, power saving, heat, or the laptop’s network behavior.

If the laptop stays joined to the hotspot the whole time but simply can’t load anything, that’s a different fault: see hotspot connects but there’s no internet.

What to check first: screen lock behavior, power saving, signal strength, or the laptop side

Start with the simplest pattern checks: does the connection hold while the screen is on but drop when the phone locks? If yes, power saving is a strong suspect. Next, compare a quick test near a window versus the back room to see whether signal changes are driving the disconnects. If the phone gets warm, let it cool and see if stability improves — heat protection can interrupt sharing. Finally, note whether the laptop says “connected but no internet” (often routing/DNS) versus fully disconnecting (often hotspot shutting off).

Before blaming the hotspot, confirm the phone’s own connection is solid: if mobile data isn’t working on the phone itself, or the phone keeps losing the network and not rejoining automatically, the hotspot can only ever be as stable as that.

Mobile hotspot disconnecting — gentle troubleshooting tips

Most repeated dropouts come from power saving, weak signal in a room, heat, or an update changing hotspot behavior.

Best approach: watch the pattern (screen lock vs. screen on), compare two locations for signal strength, and try one test while the phone is plugged in. Avoid changing many settings at once so you can tell what actually helped. If the laptop says “connected but no internet,” it may be keeping the Wi-Fi link but losing the internet route, which points you to a different category than a true disconnect. If you ever notice the phone getting very warm, stability often improves after it cools down.

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.

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FAQ

Why did my mobile hotspot start disconnecting suddenly?

This often starts after an Android/iOS update, a carrier change, or moving to a spot with weaker signal. Power saving modes can also change how long hotspot stays active when the screen locks. Heat can trigger temporary limits that look like dropouts. Look for a pattern before changing many settings.

Did this happen after an update — and is that common?

Yes, it’s fairly common for updates to change hotspot or tethering behavior. Some updates make Battery Saver/Data Saver more aggressive, especially when the screen locks. The safest approach is to confirm the update finished and then test one factor at a time. Avoid making lots of changes in one go.

Is it a phone problem, a settings issue, or my laptop?

If the phone still has normal mobile data but the laptop drops, it may be hotspot power rules, weak signal, or the laptop keeping Wi-Fi but losing the internet route. “Connected but no internet” is different from a full disconnect. Testing near a window versus a weak-signal room can clarify this quickly. If it improves when plugged in, power saving is a strong suspect.

Can I check this safely at home without breaking anything?

Yes. You can safely observe patterns like screen lock behavior, heat, and signal strength in different rooms. You can also test once while the phone is plugged in and with only one connected device. Make one change at a time so you know what mattered. If the phone becomes very hot, let it cool before continuing.

Sources

Filed under: Hotspot, Tethering & Sharing

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