How to Fix Slow Mobile Hotspot Speeds

Published 2026-10-16 · Marion Phone Repair

Your phone's mobile hotspot is connected and working, but the speed is painfully slow. Web pages take forever to load on your laptop, video streaming buffers constantly, and file downloads crawl. A slow hotspot is different from one that does not work at all — the connection exists, but the speed is not usable. The causes range from your carrier intentionally throttling hotspot traffic to your phone's settings limiting performance to simple physical factors like distance and interference.

Test and compare speeds

Before troubleshooting, establish a baseline. Run speed tests on both the phone and the connected device to identify where the bottleneck is:

1. On the phone itself (not through the hotspot), go to speedtest.net in a browser and run a speed test. This shows your raw cellular data speed
2. On the device connected to the hotspot (laptop, tablet), run the same speed test
3. Compare the two results

If the phone gets 50 Mbps but the hotspot-connected device gets 5 Mbps, the bottleneck is between the phone and the connected device (Wi-Fi hotspot settings, carrier throttling, or interference). If the phone itself only gets 5 Mbps, the cellular connection is slow and the hotspot cannot be faster than the phone's own connection.

Carrier hotspot throttling

This is the most common reason for slow hotspot speeds and the hardest to fix because it is intentional on the carrier's part.

How throttling works

Most phone plans include hotspot data but at a lower speed tier than phone data. Your phone may get 100 Mbps on a speed test, but when you tether through the hotspot, the carrier detects the tethered traffic and limits it to 5, 10, or 15 Mbps. Some plans include a certain amount of high-speed hotspot data (for example, 15 GB at full speed) and then throttle to a very slow speed (often 600 Kbps) after that allowance is used.

Check your plan

• Log into your carrier's app or website and check your plan details. Look specifically for hotspot or tethering data limits and speeds
• Check your data usage — you may have already used your high-speed hotspot allowance for the billing cycle
• If your plan has a very low hotspot speed cap, the only fix is upgrading to a plan with a higher hotspot speed or data allowance

Signs of carrier throttling

• Phone speed test shows 50 Mbps or more, but hotspot speed test on the connected device shows exactly 5 or 10 Mbps (suspiciously round numbers indicate artificial speed caps)
• Hotspot was fast at the beginning of the month but slowed down mid-month (you used the high-speed allowance)
• All types of traffic are equally slow through the hotspot (if only certain sites are slow, the issue is more likely DNS or routing, not throttling)

Switch to 5 GHz Wi-Fi

The Wi-Fi band your hotspot broadcasts on has a massive impact on speed. Most phones default to 2.4 GHz for maximum compatibility, but 5 GHz is much faster:

• 2.4 GHz: Maximum theoretical speed of about 150 to 300 Mbps depending on the standard. In practice, with interference from other Wi-Fi networks, microwaves, and Bluetooth devices, real speeds are often 20 to 50 Mbps. Better range through walls
• 5 GHz: Maximum theoretical speed of 433 to 866 Mbps. Real speeds of 100 to 300 Mbps are common. Shorter range but much less interference and much higher throughput

How to switch

• Samsung: Settings, Connections, Mobile Hotspot, Configure. Look for Band or AP Band. Select 5 GHz or 5 GHz Preferred. Some Samsung phones have a Wi-Fi 6 option that uses 5 GHz with additional performance features
• Google Pixel: Settings, Network and Internet, Hotspot and Tethering, Wi-Fi Hotspot, AP Band. Select 5 GHz
• iPhone: Settings, Personal Hotspot. Toggle on Maximize Compatibility to force 2.4 GHz, or toggle it OFF to allow 5 GHz when available. Counter-intuitively, turning Maximize Compatibility OFF gives you the faster 5 GHz band
• Other Android: Settings, Network, Hotspot, Advanced or Configure. Look for Band, Frequency, or a 5 GHz toggle

Note: If the connected device is far from the phone (more than 15 feet or through walls), 5 GHz signal may be too weak and 2.4 GHz may actually provide better speeds despite being a slower standard. Test both.

Reduce connected devices

Every device connected to your hotspot shares the same cellular bandwidth. If three devices are all streaming video, each gets roughly one-third of the available speed.

• Disconnect devices that are not actively in use. Phones and tablets connected to the hotspot may be downloading updates, syncing photos, or running background data transfers without you knowing
• Check the hotspot's connected devices list (usually in the hotspot settings screen) and disconnect anything unnecessary

Move to better cellular signal

The hotspot can only be as fast as the phone's cellular connection. If you are in an area with weak signal (one or two bars), the cellular speed is low and the hotspot reflects that.

• Move closer to a window if you are indoors. Cellular signals weaken significantly when passing through walls, especially concrete and metal
• Higher floors generally have better signal than basements
• Check which cellular band your phone is using. 5G and LTE on mid-band or mmWave frequencies are faster than low-band connections. If your phone is falling back to a slow LTE band due to poor reception, moving a short distance can make a large difference

Turn off VPN

If you have a VPN active on the phone, all hotspot traffic routes through the VPN server, adding latency and potentially reducing throughput. VPN servers have their own bandwidth limits, and the encryption and routing overhead reduces effective speeds.

• Disconnect the VPN and test hotspot speed. If speed improves significantly, the VPN was the bottleneck
• If you need the VPN, try a VPN server that is geographically closer to your location — closer servers have lower latency and usually better throughput
• Some VPN apps have split-tunneling that lets you route hotspot traffic outside the VPN while keeping other traffic protected

USB tethering for maximum speed

If you need the absolute fastest hotspot speed and the connected device is a laptop, use USB tethering instead of Wi-Fi hotspot. USB tethering has virtually no overhead — the laptop connects to the phone's data connection through a direct USB cable, bypassing Wi-Fi entirely.

• Android: Connect the phone to the laptop with a USB cable. On the phone, Settings, Network, Hotspot and Tethering, enable USB Tethering
• iPhone: Connect with a USB cable, trust the computer if prompted. The laptop should automatically use the iPhone's connection through Personal Hotspot

USB tethering typically delivers the full cellular speed to the laptop without the Wi-Fi speed and interference limitations.

Disable battery saver

Battery saving modes reduce the phone's processor speed and wireless radio power to extend battery life. Both of these reductions directly impact hotspot speed:

• Turn off battery saver or power saving mode when using the hotspot: Settings, Battery, Battery Saver (or Power Saving Mode) — toggle Off
• Some phones have a separate performance mode — enabling it can improve hotspot throughput by allowing the processor and radios to run at full power

Disable data saver

Data saver modes compress web traffic and limit background data to reduce cellular data usage. This compression and restriction also reduces hotspot speed:

• Android: Settings, Network, Data Saver — toggle Off
• iPhone: Settings, Cellular, Cellular Data Options, Low Data Mode — toggle Off

Change the hotspot security type

The security encryption used by the hotspot has a small impact on speed. WPA3 has slightly more overhead than WPA2. If your hotspot is set to WPA3 and the connected devices also support WPA2:

• Try changing the hotspot security to WPA2 in the hotspot configuration settings. The speed difference is small (usually 5 to 10 percent) but can help at the margin

Reset network settings

If nothing else helps, corrupted network configuration can cause persistent speed issues:

• Android: Settings, System, Reset Options, Reset Wi-Fi, Mobile and Bluetooth
• iPhone: Settings, General, Transfer or Reset iPhone, Reset, Reset Network Settings

After resetting, set up the hotspot again and test speeds.

Hotspot speed help in Marion

If your mobile hotspot is persistently slow and the fixes above did not improve it, Marion Phone Repair can test your cellular signal strength, check for carrier throttling, optimize your hotspot settings, and determine whether a hardware issue is limiting your tethering speed.