How to deal with Wi-Fi Calling’s maximum limit on iPhone
May 07, 2025 am 09:27 AMCellular carriers limit the number of devices you own logged into the same iCloud account that can place voice calls to the regular phone network via Wi-Fi. You might encounter this error as: “Wi-Fi Calling: You have registered the maximum number of devices for this service.”
Sometimes, it’s legitimate: You have more devices than permitted, even though this number isn’t publicized or displayed in the iPhone interface. Many carriers have a five-device total in addition to your iPhone. However, others see it when they aren’t using Wi-Fi Calling or below the limit.
Here’s how many users have figured out how to solve the problem.
Start with the basics
Wi-Fi Calling is Apple’s implementation of a clever idea that extends voice-network calling. When you place a phone call to a number using your iPhone, it typically occurs by your phone using its connection to a nearby cellular tower, which patches it into the public switched telephone network (PSTN, if you like abbreviations).
Apple lets you set your iPhone so that your other devices connected to the same iCloud account can place cellular calls via your iPhone as long as they are both nearby (within Bluetooth range to detect proximity) and connected to the same Wi-Fi network. Those details are to ensure quality.
Wi-Fi Calling takes that a step further. With this feature enabled, your iPhone and other devices skip the cellular link and use Wi-Fi to connect over the Internet to the carrier’s calling hub and, from there, out to the PSTN to complete the call. The advantage of Wi-Fi Calling is that your other devices don’t need to be near your iPhone to place a call.
You can enable Wi-Fi Calling in Settings > Cellular > Wi-Fi Calling. First, turn on Wi-Fi Calling on This iPhone. Then enable Add Wi-Fi Calling For Other Devices. (If the feature doesn’t appear in Settings > Cellular under your carrier’s section, check whether your provider offers the feature. If it does, call your carrier to see if they can fix the problem.)
Solving the limit warning
You can try to solve the problem causing the “maximum number of devices” error by changing the state of Wi-Fi Calling. It seems that each device registers with the carrier’s network, and carriers’ systems don’t always update immediately. Here’s what to try:
- At limit or below:If you have more than five devices and tried to connect another one, even if you previously reduced the total to under five, or if you’re clearly below the limit, try disabling Wi-Fi Calling for 48 to 72 hours, re-enabling it, and adding that new device again.
- Below limit:If you are well below the limit and receive the Wi-Fi Calling warning for no reason, enable Wi-Fi Calling briefly, maybe for minutes to hours. Then, disable it. Does the warning disappear?
If the above toggling doesn’t work, you will need to get on a call with your carrier and attempt to get them to solve the problem on their end.
This Mac 911 article is in response to a question submitted by Macworld reader Larry.
Frequent Mac 911 questions
We’ve compiled a list of the questions we get asked most frequently, along with answers and links to columns:read our super FAQto see if your question is covered.
The above is the detailed content of How to deal with Wi-Fi Calling’s maximum limit on iPhone. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

iPhone does not support creating contact groups directly in the address book application, but similar functions can be achieved through the following methods: 1. Use the "Group" function in the address book application, click "Edit" > "Add Group" to create a custom group; 2. Add each contact to the corresponding group by editing it; 3. If you need to send a group message, you can create a new multi-person conversation in the information application; 4. Use iCloud or Gmail to synchronize tagged groups to facilitate the management of a large number of contacts on the computer. These methods are used in conjunction with efficient management of contact groups.

iOS 15.1 and iPadOS 15.1 have been released for iPhone and iPad, the updates include SharePlay screen sharing through FaceTime, the addition of Live Text support in the iPad camera app, ProRes video capture for iPhone 13 Pro users, the inclusion of C

TocheckifaniPhoneisunlocked,1)gotoSettings>Cellular>CellularDataOptionsandlookforlabelslike“Unlocked”or“NoSIMrestrictions,”2)insertadifferentcarrier’sactiveSIMcardandseeifthephoneacceptsit,3)usetheIMEInumberononlinetoolslikeIMEI.infotocheckunlo

Not too long ago, the thought of connecting a Bluetooth mouse, trackpad, or keyboard to an iPad would have left most people very puzzled. But we’re in a new era now—modern iPads running current versions of iPadOS fully support trackpads and mice, and

Upset that you can’t take advantage of Sidecar with your Mac and iPad? Fortunately, Free-Sidecar allows you to extend Sidecar support to more iPad and Mac models not officially supported by Apple.Sidecar is a powerful feature for Mac and iPad users,

Determining the depreciation value of iPhone requires multiple factors and comparing different platforms. 2. The first choice is Apple's official replacement plan, which has a simple and transparent process, but the final valuation must be based on the actual condition of the equipment. 3. Third-party websites such as Gazelle, Swappa, etc. may provide higher quotations, but you need to pay attention to describing the real situation and avoiding the charging trap. 4. The core factors affecting value include model and storage capacity, equipment status, operator lock status, etc. Small problems may also affect the quotation. 5. If you pursue higher returns, you can choose to sell privately, but you need to weigh the time cost and transaction risks.

If you use Siri to make phone calls and start FaceTime calls, you might also be interested in using Siri to hang up your phone calls or FaceTime calls too.With this feature enabled, you can say “Hey Siri, hang up” while on a phone call or FaceTime ca

To create PersonalVoice in iOS17, you first need to enable the feature in the settings and record a sound model for about five minutes. The specific steps are as follows: 1. Open "Settings" > "Assistance Functions" > "Narration", click "PersonalVoice" and select "Create PersonalVoice"; 2. Read the text provided by the system in a quiet environment to keep the speech speed stable; 3. After creation, you can use your personalized voice to read messages, notifications, etc. in "Narration", or switch back to the default voice; 4. Currently, only English and some languages ??are supported, and Chinese is not supported at the moment; 5. Pay attention to environmental noise, intonation consistency and storage space when recording, and re-record unsatisfactory content. Voice mode
