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Start by identifying whether the problem is with one Wi-Fi network, the iPhone itself, or cellular service. Check the connection and restart before resetting network settings: that reset does not erase photos, messages, or apps, but it removes saved network configurations, including Wi-Fi passwords. Apple advises: “Reset network settings only if other solutions fail.”
First identify what is failing
Notice whether the issue affects only your iPhone, every device on one Wi-Fi network, or cellular service. That distinction points to the right next step and support contact.
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- One Wi-Fi network: Check whether other devices can use it. If they cannot, the router, network, or internet provider may be responsible.
- Your iPhone on multiple Wi-Fi networks: Try connecting somewhere else. If it cannot connect to any Wi-Fi network, Apple recommends contacting Apple Support.
- Cellular service: If the status shows “SOS,” “No Service,” or “Searching,” follow the cellular steps below and contact your carrier if service does not return.
Apple’s Wi-Fi troubleshooting steps are in If you can’t connect to Wi-Fi on your iPhone or iPad.
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Check Wi-Fi and Airplane Mode
- Open Settings and make sure Wi-Fi is on. Tap the network you want to join.
- Confirm Airplane Mode is off.
- If the Wi-Fi control is dimmed, restart your iPhone and check again.
If the iPhone says “No Internet Connection” while connected to Wi-Fi, the phone may have joined the network successfully even though the network itself has no internet access. Check other devices before treating it as an iPhone radio problem.
#1 Best Overall
- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
- Please check with your carrier to verify compatibility.
- The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable.
- Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
Compare devices and locations
Try another device on the same Wi-Fi. If that device also cannot get online, contact the internet service provider (ISP) or the network administrator. Then try the iPhone on a different Wi-Fi network. If it fails to connect anywhere, contact Apple.
Check a network-specific problem
If other devices also have trouble on the affected network, check that the router is powered on and that the iPhone is within range. If the router offers another supported frequency, try it. Restart the router and modem, and check for router firmware updates. If you do not manage the network, ask its administrator or contact the ISP.
Rank #2
- 6.1" Super Retina XDR OLED, HDR10, Dolby Vision, 1000nits (typ), 2000nits (HBM), 2556x1179px at 460ppi, 3561mAh Battery
- 128GB 8GB RAM, Apple A18 (3nm), Hexa-core (2x4.04 GHz + 4x2.20 GHz), Apple GPU 5-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide + 12MP, f/2.2, ultrawide, Front Camera: 12MP, f/1.9, wide, iOS 18, upgradable to iOS 18.5
- 4G LTE: 1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/30/32/34/38/39/40/41/42/48/53/66/71, 5G: n1/2/3/5/7/8/12/14/20/25/26/28/29/30/38/40/41/48/53/66/70/71/75/76/77/78/79 - Dual eSIM
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Sprint., Etc.
Test VPN or security software
A VPN or security app can affect connectivity, but its presence alone does not prove it is the cause. Apple advises uninstalling the software, restarting the iPhone, and testing Wi-Fi. If you need the software or cannot remove a managed configuration, contact its provider or your VPN administrator.
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- Open Control Center or Settings and turn on Airplane Mode. Wait at least 15 seconds, then turn it off.
- Restart the iPhone.
- If cellular service remains unavailable, contact your carrier to check your account and service in your area.
For Apple’s cellular troubleshooting guidance, see If you see SOS, No Service, or Searching on your iPhone or iPad. A carrier is the appropriate contact for account or coverage issues.
Rank #3
- 6.1inch Super Retina XDR display. Aluminum with color-infused glass back. Ring/Silent switch
- Dynamic Island. A magical way to interact with iPhone. A16 Bionic chip with 5-core GPU
- Advanced dual-camera system. 48MP Main | Ultra Wide. Super-high-resolution photos (24MP and 48MP). Next-generation portraits with Focus and Depth Control. 4X optical zoom range
- Emergency SOS via satellite. Crash Detection. Roadside Assistance via satellite
- Up to 26 hours video playback. USB C, Supports USB 2. Face ID
What Reset Network Settings changes
Reset Network Settings removes saved network configurations, so you will need to reconnect to Wi-Fi and enter passwords again. It also removes previously used VPN settings that were not installed through a configuration profile or mobile device management (MDM). Apple’s iPhone User Guide notes that the iPhone’s device name may revert to “iPhone,” manually trusted certificates may become untrusted, and cellular data roaming may be turned off. Wi-Fi turns off and back on during the reset, disconnecting the phone from its current network.
The reset does not erase personal content or media. It is different from Reset All Settings, which changes a broader set of settings, including privacy, location, keyboard, and Apple Pay settings. It is also different from Erase All Content and Settings, which removes content. Apple explains these options in About Reset All Settings and Erase All Content and Settings.
Rank #4
- This pre-owned product is not Apple certified, but has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.
- There will be no visible cosmetic imperfections when held at an arm’s length.
- This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied.
- Product may come in generic Box.
Reset network settings on iPhone
Use this only after the simpler checks have failed. The current Apple route is:
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- Tap General, then Transfer or Reset iPhone.
- Tap Reset, then choose Reset Network Settings.
- Follow the onscreen prompts to confirm.
Select the network-reset option specifically. Do not select Reset All Settings or Erase All Content and Settings. Labels can vary by iPhone or iOS version; Apple’s user guide to resetting iPhone settings describes the options.
Best Value
- 6.1" Super Retina XDR OLED, HDR10, 800 nits (HBM), 1200 nits (peak), 2532x1170px at 460ppi, 4005mAh Battery
- 8GB RAM, Apple A18 6-core CPU (2 performance + 4 efficiency cores), Apple GPU 4-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide, Front Camera: 12MP, f/1.9, wide, iOS 18.3.1, upgradable to iOS 18.5
- Connectivity: Global 4G LTE, Sub-6 GHz 5G, LTE, Wi-Fi 6, Bluetooth 5.3, NFC, USB-C, Wireless Charging (7.5W). (does not have mmWave 5G or MagSafe or physical SIM card) - Dual eSIM Only
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Straight Talk., Etc.
If your iPhone is managed by work or school, consult your IT administrator before resetting. VPN, Wi-Fi, or other settings installed through an organization’s profile or MDM may be controlled by that organization.
What to do after the reset
Reconnect to Wi-Fi by selecting the network in Settings and entering its password. Then use the symptom to choose the next contact:
Quick Recap
- Other devices also cannot get online on that Wi-Fi: Contact the ISP or network administrator.
- The iPhone cannot connect to any Wi-Fi network: Contact Apple Support.
- Wi-Fi works but cellular still shows “SOS,” “No Service,” or “Searching”: Contact your carrier.
- A work or school connection is still unavailable: Ask your IT administrator to check the managed settings.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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