Why iPhone 5 Won't Connect to Another iPhone's Wi-Fi: A Complete Troubleshooting Guide

You are trying to share the Internet from a new one iPhone 13 to the old one iPhone 5, but the device stubbornly doesn't detect the network or refuses to connect? This problem is familiar to many owners of older models. Apple, especially when trying to use the function Modem mode (Hotspot). Protocol incompatibility is to blame in 90% of cases. Wi-Fi, outdated software or incorrect security settings.

In this article we will look at all possible reasons, Why iPhone 5/5S can't connect to another's access point iPhone — from trivial password errors to hardware limitations of the chip Broadcom BCM4334, installed in the 2012-2013 model. You will also learn how to bypass the restrictions through Bluetooth or USB, If Wi-Fi It doesn't work in principle.

Let us warn you right away: some of the solutions will require manual change of settings on both devices, and in some cases only one will help hardware upgrade (for example, replacing a module Wi-Fi). But let's start with something simple - checking the obvious reasons.

1. Wi-Fi Protocol Compatibility Issues: Why the iPhone 5 Can't See the New iPhone's Network

The main technical reason for the malfunction lies in differences in supported wireless communication standards. iPhone 5 (model A1428/A1429) is equipped with a module Wi-Fi 4 (IEEE 802.11n), which only operates in the range 2.4 GHz and does not support:

• 📶 Wi-Fi 5 (802.11ac) — a standard that appeared in iPhone 6 and newer, operates on frequency 5 GHz.
• 🔒 WPA3 - a modern encryption protocol, not available on iOS versions below 12.0.
• 🔄 Dual-Band - automatic switching between 2.4 And 5 GHz, which can disrupt the connection.

If on the distributor iPhone mode is on "Maximum compatibility" (in the modem settings), the network should be visible. But by default, new models (iPhone 12/13/14) create an access point in the standard 802.11ac, which iPhone 5 physically cannot detect.

How to check:

1. On the distributor iPhone open Settings → Personal Hotspot → Wi-Fi Password.
2. Look at the network name: if there is a suffix at the end _5G or _Plus, then the network is working on 5 GHz.
3. Try changing the standard manually to 2.4 GHz (instructions below).

⚠️ Attention: Starting from iOS 14, Apple removed the ability to force range selection 2.4/5 GHz in the modem settings. A workaround is to reset the network settings (section 3).

2. Outdated iOS Version: Why Updating Can Fix the Problem

iPhone 5 officially supports iOS up to version 10.3.4 (The last security update was released in 2019). This means that:

• 🔄 The device cannot work with the protocol WPA3, which can be enabled by default on new iPhone.
• 📱 There is no support for modern authentication methods, for example, EAP-SIM for operator networks.
• 🛠️ There are no fixes for bugs with connecting to access points created by devices on iOS 15+.

How to check the iOS version on iPhone 5:

1. Go to Settings → General → About.
2. Find the line Software version. If it is indicated there 10.3.4 or below - that's your problem.

Unfortunately, Apple no longer releases updates for iPhone 5, but there are workarounds:

Critical Information: If the sharing iPhone has "WPA3 Only" enabled (in the modem settings), the iPhone 5 will never connect—this protocol is not supported on iOS 10.

3. Incorrect access point settings on the sharing iPhone

Often the problem is not in the iPhone 5, but how internet sharing is configured on the second device. Here are the key parameters to check:

Step-by-step instructions for resetting your modem:

1. On the distributor iPhone go to Settings → Tethering.
2. Turn off the feature (Allow others → Off).
3. Return to Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
4. After rebooting, turn it on again Modem mode and try to connect.

4. iPhone 5 Hardware Limitations: When Software Fixes Don't Help

If you have tried all the settings but iPhone 5 Still not connecting, the problem may be ironHere are the most common hardware causes:

• 📡 Damaged Wi-Fi module (chip Broadcom BCM4334) - often fails after being dropped or exposed to moisture.
• 🔋 Worn out battery — when the battery is low (<20%) iOS disables power-hungry modules, including Wi-Fi.
• 🔌 Oxidized antenna contacts - especially relevant for iPhone 5 after 5+ years of operation.

How to diagnose a hardware failure:

1. Try connecting to any other Wi-Fi network (for example, a home router). If it doesn't work, the problem is with the phone.
2. Check if it sees iPhone 5 other access points (eg from Android-smartphone).
3. Connect the charger - if after this Wi-Fi It worked, the battery is to blame.

If the diagnosis is confirmed, there are two options:

1. Repair: Replacing the module Wi-Fi will cost 1 500–3 000 ₽ (depending on the service center).
2. Workaround: Use Bluetooth or USB for Internet distribution (instructions in the next section).

How to check the status of a Wi-Fi module without disassembling it?

Open the app Field Test Mode (activated by dialing 3001#12345# on your phone). Go to Wi-Fi → Rx Agc0. If the value <-50 dBm when connected to the network, the module works normally. If 0 or an error - the chip is faulty.

5. Alternative methods of Internet distribution: Bluetooth and USB

If Wi-Fi It doesn't work fundamentally; you can use other data transfer protocols. Here are step-by-step instructions for each method:

🔵 Connect via Bluetooth (slow, but it works)

1. On the distributor iPhone turn on Tethering → Allow Others to Use: On.
2. In the section Connection method select Bluetooth.
3. On iPhone 5 go to Settings → Bluetooth and find the distributing device.
4. Confirm pairing (password is usually not required).
5. Return to Settings → Cellular → Data Options → Cellular Data and enable the option.

Restrictions: The speed will not be higher 3 Mbps (against 20–50 Mbps By Wi-Fi). Suitable only for instant messengers and light surfing.

🔌 Connecting via USB (the most stable method)

To do this you will need:

• 🔌 Cable Lightning–USB (or adapter Lightning–USB-C for new ones iPhone).
• 💻 Computer (Mac or Windows) for intermediate connection (if direct connection does not work).

Instructions:

1. Connect iPhone 5 to the distribution device with a cable.
2. On the distributor iPhone turn on Tethering → Allow Others to Use: On and select USB.
3. On iPhone 5 a notification may appear "Trust this computer?" — confirm.
4. If the Internet doesn't work, reconnect the cable or try a different port.

Advantages: Speed ​​up to 40 Mbps, no protocol compatibility issues, lower battery consumption.

6. Operator issues: modem mode blocked

Many mobile operators (MTS, Beeline, Tele2, MegaFon) block the function by default Modem mode in tariffs without the option Internet for DevicesThis may manifest itself as follows:

• 🚫 The network is visible, but when connecting, it gives an error "Unable to connect to the network".
• 🔄 The access point turns on, but turns off after 30 seconds.
• 📵 On the distributor iPhone a notification appears "Cellular data is disabled.".

How to check for blocking:

1. Open on the distributor iPhone Settings → Cellular → Data Options → Cellular Data.
2. If option Modem mode missing or inactive - your tariff plan blocks the function.
3. Call the operator (numbers: *111# For MTS, *102# For Beeline) and check whether the option is enabled.

Connection cost (2026):

⚠️ Attention: Tariff terms are subject to change. Please check the operator's website or your personal account for up-to-date information.

7. Resetting settings and extreme measures

If none of the above helps, radical methods remain. Before using them Be sure to make a backup copy both devices through iTunes or iCloud.

🔄 Completely reset network settings on iPhone 5

1. Go to Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
2. Enter your password (if required) and confirm.
3. After rebooting, try connecting again.

🗑️ Reset all settings (without deleting data)

This method will return iPhone 5 to factory network settings, but will keep photos and apps:

1. Settings → General → Transfer or reset iPhone → Reset → Reset all settings.
2. Wait 5-10 minutes (the device will reboot).
3. Set up Wi-Fi again.

⚠️ Full reset to factory settings (extreme case)

Use this method only if you are sure that the problem is software-related. All data will be deleted!

1. Connect iPhone 5 To iTunes (on Mac or Windows).
2. Select the device and click Restore iPhone.
3. After recovery, set up your device as new (do not restore from a backup to avoid carrying over errors!).

Important: If the problem persists after a full reset, there is a malfunction hardware (see section 4).

FAQ: Frequently asked questions about connecting iPhone 5 to another iPhone's Wi-Fi network

My iPhone 5 sees the network but won't connect—it says "Unable to connect." What should I do?

Most likely the problem is type of security. Try:

1. On the distributor iPhone change the encryption type from WPA3 on WPA2 (in the modem settings).
2. Make sure that the password contains only Latin letters and numbers (no Cyrillic or special characters).
3. Restart both devices.

Is there any way to make the iPhone 5 work with 5GHz Wi-Fi?

No, iPhone 5 does not physically support the range 5 GHz due to chip limitations Broadcom BCM4334The only way out is to use 2.4 GHz or alternative connection methods (Bluetooth/USB).

After updating iOS, the tethering mode on the iPhone I'm sharing stopped working. Why?

In new versions iOS (starting from 15.0) Apple Tightened security requirements for access points. Possible reasons:

• It turned on automatically. WPA3 (not supported on iPhone 5).
• The operator updated its policies and blocked the distribution (see section 6).
• Settings failure - resetting the network will help (section 7).

Can I use my iPhone 5 as a signal repeater?

Technically yes, but with some caveats:

1. iPhone 5 can't work in the mode repeater (repeater) "out of the box".
2. You can connect it to the main network and then distribute the Internet through Bluetooth or USB to another device.
3. For a full-fledged repeater you need router or Android- smartphone with support Wi-Fi Direct.

What to do if none of the methods helped?

If you've tried everything in this article, there are three options left:

1. Take it to a service center for module diagnostics Wi-Fi (cost of verification - 500–1 000 ₽).
2. Buy an external Wi-Fi adapter with support 2.4 GHz (For example, TP-Link TL-WN725N) and connect it through OTG adapter (but this does not work on all firmware).
3. Use another device for distribution (for example, Android- smartphone or router 4G).