Sharing a hotspot from a MacBook: what the Wi-Fi icon changes to

The phrase covers two opposite tasks, and the settings for them are in different places. One is turning the MacBook into the thing that hands out internet access, so a tablet or a colleague's laptop can get online through it. The other is the MacBook taking cellular access from an iPhone, which is what most people mean when they say they are on a hotspot. Both change the Wi-Fi icon at the top of the screen, and to two different shapes.

That icon is the fastest way to tell which state a Mac is actually in, and it is the part that almost never gets explained. Apple publishes a table of what each Wi-Fi menu icon means, and three of the entries are about sharing. Reading them once removes most of the guesswork about whether a hotspot is running, being used, or quietly not working.

Which of the two situations is in front of you

Apple's page on Wi-Fi menu icons lists seven states for the same icon. The three that matter here, in Apple's own wording, are that "the Mac is using an internet connection shared by an iPhone or iPad," that "the Mac is connected to another device using a temporary Wi-Fi connection," and that "the Mac is sharing its internet connection over Wi-Fi."

Those describe the two directions plus one edge case. The first is the MacBook as a client of an iPhone. The third is the MacBook as the source. The middle one covers a direct, temporary link to another device rather than a network.

The remaining four entries are worth knowing because they get mistaken for hotspot problems. Apple gives them as Wi-Fi being on, Wi-Fi being "off or not available," Wi-Fi being "on, but not associated with a network," and one that looks like a failure but is specific: "No internet. This icon is displayed when a router and IP address can't be assigned to the Wi-Fi interface." That last one is the shape to look for when a device has joined a hotspot and still cannot load anything, because it points at addressing rather than at signal.

Checking the icon before changing any settings saves the most common wasted half hour, which is reconfiguring Internet Sharing on a Mac that was never the one sharing.

Sharing the MacBook's own connection

This is the Internet Sharing side. Apple's steps put it under the Sharing pane rather than under Network, which is why it is hard to find by browsing.

Choose Apple menu and then System Settings, click General in the sidebar, then click Sharing, scrolling down if needed. Turn on Internet Sharing, then click Configure. The "Share your connection from" pop-up menu selects the connection being shared, and Apple's example is Ethernet. Below "To devices using," turn on the port other devices will use to reach it, such as Wi-Fi.

When Wi-Fi is the outgoing side, a few more fields appear. Apple lists a Network Name for the shared connection, a Channel pop-up menu for cases where the default channel is not wanted, a Security pop-up menu, and a Password with a "Show password" checkbox below it. The security guidance is specific: choose "WPA3 Personal if all computers that use the shared connection support WPA3," and "WPA2/WPA3 Personal if some computers that use the shared connection support only WPA2." Click Done to finish.

There is a second variant hidden behind a modifier key. Apple documents Option-clicking next to Internet Sharing, which exposes a Create NAT64 Network switch further down the same sheet. That is for testing how software behaves on an IPv6-only network, and it is not something to leave on by accident.

One warning on that page deserves to be read in full rather than skimmed, because it concerns other people's connections rather than the Mac's own.

WARNING: If your internet connection and your local network use the same port (Ethernet, for example), investigate possible side effects before you turn on internet sharing. In some cases, sharing your internet connection disrupts the network. If you use a cable modem, for example, you might unintentionally affect the network settings of other ISP customers, and your ISP might terminate your service. Source: support.apple.com, read September 28, 2026

In practice that rules out the tempting shortcut of sharing an incoming Wi-Fi connection back out over the same Wi-Fi radio. The documented example goes in one port and out another: Ethernet in, Wi-Fi out, or a cellular adapter in, Wi-Fi out.

Taking a hotspot from an iPhone instead

The other direction has a name. Apple calls it Instant Hotspot, and describes it as using the iPhone's Personal Hotspot, useful when the Mac has no Wi-Fi network available.

The conditions are short and all of them matter. Both devices need Wi-Fi and Bluetooth turned on. They need to be "within 30 feet (10 meters) of each other." Being signed in to the same Apple Account on both makes connecting faster. And one limitation catches people out regularly: Apple states that Personal Hotspot shares the iPhone or iPad's cellular connection only, and that a device cannot join a Wi-Fi network and then pass that network on to something else. A phone on hotel Wi-Fi cannot relay it.

Setting it up on the phone is under Settings, then Cellular, then Set Up Personal Hotspot. If Cellular Data is on and that option is missing, Apple's instruction is to contact the carrier about adding Personal Hotspot to the plan. On a phone using two SIMs, the hotspot uses whichever line is selected for cellular data.

Connecting from the Mac is a click in the Wi-Fi menu, where the phone appears in a Personal Hotspot section above known networks. Apple notes that it may take a few seconds to appear and suggests clicking Other Networks if it does not. When the connection is up, the Personal Hotspot icon appears both on the iPhone and in the menu bar of the connected Mac. One behaviour is easy to mistake for a fault: Apple states that when the hotspot is not being used, the devices disconnect automatically to save battery life.

Wi-Fi is not the only transport. Bluetooth pairing works, and so does a cable, which is the most reliable of the three on a crowded network. With a cable, Apple notes two prompts to expect: a "Trust This Computer?" alert on the phone, which may ask for the passcode, and an "Allow accessory to connect?" alert on the Mac.

Reading the icon, and what it will not tell you

The Wi-Fi menu holds more detail than the icon alone, and one modifier key unlocks it. Apple documents Option-clicking the Wi-Fi icon in the menu bar to see, for the connected network, the IP address, router address, channel, frequency or band, security standard, and 802.11 protocol.

That list is the fastest diagnosis available without extra software. A shared connection that shows no IP address and no router address matches the "No internet" state exactly, and points at the sharing Mac's configuration rather than at the client. A hotspot that reports a different band than expected explains a slow connection more honestly than a signal bar does.

Disconnecting has a non-obvious control worth knowing. Apple's instruction is to click the Wi-Fi icon in the menu bar, then "click the Wi-Fi icon to the left of the connected network," which disconnects from that network without turning Wi-Fi off entirely.

The status menu can also be hidden, which is the other half of this. Apple's steps are System Settings, then Menu Bar in the sidebar, then the Wi-Fi checkbox: selected shows it, deselected hides it. The same menu is reachable from Control Center by moving the pointer over Wi-Fi and clicking through, so hiding the icon does not remove the function.

When the hotspot connects but nothing loads

This is the failure that looks like a signal problem and almost never is. The client device shows a connection, the bars are full, and every page times out.

The icon has a specific state for it. Apple's description is that the no-internet icon "is displayed when a router and IP address can't be assigned to the Wi-Fi interface." That narrows the cause to addressing rather than radio, which is a different set of checks. Option-clicking the Wi-Fi icon confirms it directly, since a connection with no IP address and no router address listed has joined the network and been given nothing to work with.

On the Instant Hotspot side, Apple's own troubleshooting list is short: confirm that both devices have Wi-Fi and Bluetooth turned on, and that they are within 30 feet, or 10 meters, of each other. Beyond that the page points to a separate support article for a hotspot that is not working on the phone itself, which is where a carrier or plan restriction would show up.

On the Internet Sharing side, the port pairing is the first thing to re-check. A connection being shared out over the same interface it arrives on is the documented risk case, and the symptom is exactly this one: clients associate, then get no usable address.

When the icon is not visible at all

Two situations leave the Wi-Fi icon out of reach on a MacBook, and both are about space rather than about networking.

The first is that the checkbox above has been cleared, deliberately or by someone tidying up. Control Center still has Wi-Fi, but the icon that changes shape when a hotspot starts is gone, and with it the whole diagnostic described here.

The second is crowding. Status menus fill the row from the right while app menus grow from the left, and on a MacBook with a notch those two meet earlier than on an external display. Once the row is full, status items stop appearing rather than wrapping to a second line, and the Wi-Fi icon can be among the casualties depending on order. Two manual controls help: Apple documents holding the Command key while dragging a status icon to rearrange it, and holding Command while dragging one out of the menu bar to remove it. Moving Wi-Fi next to the clock is a two second change that makes the icon worth reading again.

Where the row is full of resident app icons rather than system controls, the fix is to reduce what is competing for the space. Apple's Menu Bar settings page keeps those in a separate list, described as "Allow in the Menu Bar. Some applications provide menu bar items for extra functionality," with a checkbox each and no option to show them only while active. A menu bar manager covers the same ground without uninstalling anything, and the pricing page sets out what that costs.

What to change first

Look at the Wi-Fi icon before changing a setting, because its shape already says whether this Mac is the source of the hotspot, the client of one, or neither. If it is the source, check that the incoming and outgoing ports are different before turning Internet Sharing on, given Apple's warning about sharing over the same port. If the icon is not visible at all, turn it back on in Menu Bar settings and Command-drag it next to the clock: Koffret keeps that space clear enough for it to stay readable.