Hotspot Hero v1.4 · iOS 17+
FIELD NOTES · May 16, 2026

What is a Personal Hotspot? The complete iPhone guide

Personal Hotspot is Apple’s name for the feature that turns an iPhone or iPad into a portable Wi-Fi network. Other devices, like a laptop or tablet, connect to the iPhone’s Wi-Fi, and the iPhone forwards their internet traffic over its own cellular connection. It’s been a built-in iOS feature since 2010 and works on every iPhone from the iPhone 4 onward, assuming your carrier plan includes tethering.

This guide is the definitive walkthrough: what Personal Hotspot is, how it works, what you need to use it, every connection method, the most common things that go wrong, and how it compares to the generic “Mobile Hotspot” you’ve heard about on Android.

What is Personal Hotspot?

Personal Hotspot is Apple’s branded name for cellular tethering on iOS and iPadOS. When you turn it on, your iPhone:

  1. Broadcasts a small Wi-Fi network using the device’s own name (whatever you set under Settings → General → About → Name)
  2. Authenticates connections with a password shown in the Personal Hotspot settings page
  3. Routes connected devices’ internet traffic through its own cellular data plan

The connected devices see the iPhone as a regular Wi-Fi router. The iPhone sees the connected devices as clients consuming its cellular data. Your carrier sees all of that data as part of your phone’s allowance (with some plans separating “phone data” from “hotspot data” caps).

The feature lives under Settings → Personal Hotspot. On older iOS versions or some carrier configurations, it’s nested under Settings → Cellular → Personal Hotspot.

How does Personal Hotspot work? Three connection methods

iOS lets connected devices reach the hotspot in three ways. Most people use Wi-Fi without realizing the other two exist.

Wi-Fi (the default)

The iPhone broadcasts a Wi-Fi network. Other devices connect like they would to a café network, using the password from the Personal Hotspot page. This is the fastest method and the only one that works for game consoles, smart TVs, and most non-Apple devices.

iOS supports up to 5 simultaneous Wi-Fi clients on Personal Hotspot.

Bluetooth

Pair the iPhone with the connected device via Bluetooth, then set the connected device to use the iPhone as a network gateway. On a Mac, that’s System Settings → Network → Bluetooth PAN. On Windows, it’s in the Bluetooth devices list.

Bluetooth tethering is much slower than Wi-Fi (typically 1 to 2 Mbps) but uses far less iPhone battery. Useful for long sessions where you only need email, messaging, and lightweight browsing.

USB

Connect the iPhone to a Mac or PC with a Lightning or USB-C cable. The first time, the iPhone will ask whether to trust this computer. Tap Trust. From that point on, the laptop sees the iPhone as a network interface, and traffic routes through it automatically.

USB tethering is the most stable of the three (no Wi-Fi to drop, no Bluetooth pairing to renegotiate) and the cable trickle-charges the iPhone while it tethers. If you tether to the same laptop daily at a desk, USB is the boring reliable answer.

What you need to use Personal Hotspot

Four things have to be true:

  1. An iPhone or iPad with cellular. The Wi-Fi-only iPad models can’t host Personal Hotspot because they have no cellular antenna to share.
  2. A carrier plan that includes tethering. Most major postpaid plans do, but the data is often capped separately from your phone data. Many prepaid and MVNO plans exclude tethering entirely.
  3. Cellular Data turned on. If it’s off in Settings → Cellular, Personal Hotspot greys out completely. You can’t share a connection you don’t have.
  4. iOS 4.3 or later. Effectively any iPhone manufactured in the last decade.

If any of those is missing, Personal Hotspot won’t work. The most common gotcha is the second one: assuming your plan includes tethering when it doesn’t. Sign in to your carrier account online and look at your plan’s features.

How to turn on Personal Hotspot

The basic setup takes 20 seconds. We have a separate step-by-step setup guide that walks through every screen, but the short version:

  1. Open Settings → Personal Hotspot
  2. Toggle Allow Others to Join to on
  3. Note the Wi-Fi Password shown on the same page
  4. On the device you want to connect, find your iPhone’s name in the Wi-Fi list and enter the password

That’s it. Your iPhone is now a portable Wi-Fi router.

Personal Hotspot vs Mobile Hotspot: what’s the difference?

Functionally, they’re the same feature. Apple calls it Personal Hotspot on iPhone and iPad. Android calls it Mobile Hotspot or Wi-Fi Hotspot, depending on the manufacturer’s UI skin. Both share your phone’s cellular data over Wi-Fi (and both also support Bluetooth and USB tethering as secondary methods).

The naming difference dates to Apple wanting a more distinct brand for the feature when iPhone 4 launched in 2010. There’s no underlying technical distinction. If a website or carrier doc mentions “mobile hotspot” generically, they mean the same thing as Personal Hotspot on iPhone.

For a side-by-side breakdown of how the two compare in real use, see our Mobile Hotspot vs Personal Hotspot guide.

The most common Personal Hotspot problems

In order of frequency, what people hit:

1. Hotspot keeps disconnecting when the iPhone is idle

Far and away the most reported issue. The cellular radio powers down when the phone screen turns off, and connected devices lose the network within seconds. This is a built-in iOS power management behavior with no toggle to disable it.

The fix is an app that uses background location updates to keep the radio responsive. We built Hotspot Hero specifically for this. Our disconnection deep-dive explains why every other workaround hits a ceiling.

2. Personal Hotspot is missing or greyed out

If you open Settings → Personal Hotspot and the option is either missing entirely or greyed out, the cause is almost always one of seven things: cellular data off, carrier plan doesn’t include tethering, eSIM glitch, recent iOS bug, Screen Time restriction, corrupt network settings, or iCloud sync issue. Our seven causes of greyed-out hotspot walks through each fix.

3. Connects but no internet loads

The hotspot appears to be active and your laptop says it’s connected, but pages won’t load. Usually one of three causes: weak cellular signal on the iPhone, the iPhone is tethering from Wi-Fi instead of cellular, or your carrier has throttled your hotspot speed after exceeding the monthly cap. Check the cellular signal indicator first.

4. Hotspot drops the moment you lock the screen

A specific case of #1, distinct enough that we wrote a separate piece on screen-lock drops. Same root cause (radio sleep), same fix.

5. Connected device can’t see the hotspot network

Usually because the iPhone is broadcasting 5 GHz and the connected device only supports 2.4 GHz, or the device is just out of Wi-Fi range. Toggle Maximize Compatibility in Settings → Personal Hotspot to switch the hotspot to 2.4 GHz, which older laptops, game consoles, and IoT devices handle more reliably.

Personal Hotspot data and battery: what to expect

Two numbers to plan around.

Data usage

The hotspot itself has zero overhead. All the data going through it is what your connected device consumes. So 30 minutes of HD Zoom on a connected laptop uses about 700 MB of your iPhone’s cellular plan. An hour of Netflix HD uses about 3 GB. Software updates pulled to the connected laptop use however many GB the update is.

We built a free data usage calculator that estimates monthly consumption based on what you actually do via hotspot. Useful for sizing your carrier plan or seeing whether your usage fits inside the hotspot cap.

Battery

Running Personal Hotspot drains an iPhone faster than normal use. A typical session looks like:

  • Wi-Fi tethering, moderate traffic, screen off: 15 to 25 percent per hour
  • Wi-Fi tethering, heavy traffic (video calls, streaming): 25 to 35 percent per hour
  • Bluetooth tethering, light traffic: 5 to 10 percent per hour
  • USB tethering: the cable charges the phone, so battery is not a concern

Plan to keep a charger or power bank nearby for long sessions.

Privacy and security on Personal Hotspot

Personal Hotspot is password protected by default, and iOS uses WPA2 or WPA3 encryption. As long as you don’t share your password publicly, the connection is as secure as any home Wi-Fi network.

A few practical security notes:

  • Change the default password to something only you know. The randomly-generated default is secure but unmemorable; pick something you’d use again
  • Don’t broadcast your hotspot in untrusted environments for hours unattended. Someone close enough to your iPhone could attempt a brute-force attack on the password, though this is rare
  • Your carrier sees all the data going through the hotspot, exactly as they see your normal phone data. VPN on the connected device (not the iPhone) hides browsing from the carrier

Frequently asked questions

Is Personal Hotspot free?

The feature is built into iOS at no charge. Whether you can use it depends on whether your carrier plan includes tethering. Many plans do, some require an add-on charge, and some prepaid plans exclude tethering entirely. The data you use through Personal Hotspot is billed against your phone plan.

Why is Personal Hotspot greyed out on my iPhone?

The most common causes are: cellular data turned off, carrier plan doesn’t include tethering, eSIM glitch after switching lines, recent iOS update bug, Screen Time restriction blocking it, or corrupted network settings. Our seven causes guide walks through every fix.

How many devices can connect to Personal Hotspot at once?

Up to 5 simultaneous Wi-Fi connections on iPhone. Bluetooth and USB are one device each, but you can mix them, so theoretically 5 over Wi-Fi plus 1 over USB plus 1 over Bluetooth all at once. In practice, performance degrades fast past 3 active devices.

Does Personal Hotspot drain the battery?

Yes, noticeably. Expect 15 to 25 percent battery per hour on Wi-Fi tethering with normal traffic. Bluetooth is gentler. USB recharges as it tethers. The most efficient long session is USB.

Can I use Personal Hotspot when traveling internationally?

Yes, if your plan includes international roaming or if you have a local eSIM installed. The Personal Hotspot feature works identically abroad. Just be aware of roaming data costs unless you’re on an eSIM. Our travel hotspot guide covers eSIMs vs roaming vs portable routers for international trips.

Why does Personal Hotspot keep disconnecting?

iOS powers down the cellular radio when the iPhone is idle, to save battery. Connected devices lose the network within seconds. There’s no built-in toggle to disable this. The only reliable fix is an app like Hotspot Hero that uses background location updates to keep the radio responsive.

Does Personal Hotspot use Wi-Fi or cellular?

Cellular. Personal Hotspot shares your iPhone’s cellular data connection. Wi-Fi is only the way connected devices reach your iPhone. If your iPhone is itself on a Wi-Fi network, Personal Hotspot may try to share that Wi-Fi connection instead of cellular, which often causes “connected but no internet” symptoms. Best practice: turn Wi-Fi off on the iPhone before starting a hotspot session.

Where to go from here {.no-faq}

If you’re setting Personal Hotspot up for the first time, the step-by-step setup guide is the one to read. If you can’t even turn it on, the seven causes of greyed-out Personal Hotspot covers every fix. If it works but keeps dropping, the disconnection piece explains the root cause and the only real fix.