Use call screening and spam filtering—not a setting that sends every unsaved number straight to voicemail. On supported iPhones, Ask Reason for Calling screens an unsaved caller before your phone rings, while the separate spam filter silences calls the carrier identifies as spam or fraud. Neither approach can identify every scam, so combine phone controls with your carrier’s options and safe call-handling habits.
Screen unknown callers instead of silencing them
“Unknown caller” usually means a number that is not saved in your contacts; it does not necessarily mean the caller is a scammer. A doctor’s office, school, delivery driver, or business may call from a number you have never saved.
Call screening gives an unsaved caller a chance to identify the reason for the call before it reaches you. Silencing unknown callers is more restrictive: calls from unsaved numbers do not ring through and may go to voicemail. If you need legitimate new callers to reach you, choose screening where it is available and reserve silence for situations where you are comfortable missing unsaved calls.
Set up unknown-caller screening on iPhone
Apple’s support instructions, published September 14, 2026, place the controls in Settings → Apps → Phone. Menu labels or availability may vary with software version, region, and carrier; use Apple’s current iPhone instructions if the options on your device differ.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
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- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
- Open Settings → Apps → Phone.
- Under Screen Unknown Callers, select Ask Reason for Calling. The caller is asked why they are calling before your phone rings, giving you a chance to decide whether to answer.
- Leave the setting at Never if you want unsaved numbers to ring normally. Choose Silence only if you want unsaved callers sent to voicemail rather than screened.
- To handle carrier-identified spam separately, go to Call Filtering and turn on the spam filter. Apple says calls identified by the carrier as spam or fraud are silenced, sent to voicemail, and placed in the Spam list.
Apple notes that call screening may use standard calling and data rates, does not screen calls while roaming, and turns off for 24 hours after you call emergency services. It also recommends adding important numbers, such as family, schools, and doctors, to Contacts.
Choose a call-control option that fits your phone line
The right tool depends partly on whether you use a mobile phone, a traditional landline, or VoIP. The FTC advises checking with your phone company and researching call-blocking apps before installing one; some are free and others charge. Its guidance does not establish that any particular app or service will catch every robocall or preserve every legitimate call.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
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- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
- Carrier services: Ask your provider what call blocking or labeling it offers for your specific line. Confirm what it filters and how it handles unsaved callers.
- Third-party apps: Review app-store ratings and independent reviews before installing. Consider whether the app’s filtering approach suits your needs, since caller labels and detection are not guarantees.
- Traditional landlines: A physical call-blocking device may be an option, but check that it is compatible with your particular phone setup. A landline device is not a solution for a mobile line.
For more on the available categories and why the best choice varies by phone type, see the FTC’s guide to cutting down on unwanted calls. Android menus and feature availability vary; check your phone maker’s current instructions rather than assuming an iPhone setting or path applies.
What the Do Not Call Registry can—and cannot—do
The National Do Not Call Registry is free and tells compliant telemarketers not to make covered sales calls to registered numbers. It is not a technical call-blocking feature, so scammers and other callers who ignore the law may still call. The FTC says numbers should appear on the Registry the day after registration, but it can take up to 31 days for sales calls to stop. Register or check your status through the FTC’s National Do Not Call Registry FAQs.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Not every automated call is illegal. The FTC says robocalls trying to sell something are generally illegal unless the company has the recipient’s direct written permission to call that way; some informational calls and other categories may be allowed, and state law may add requirements. Details are in the FTC’s robocall guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If a suspicious robocall gets through
- Hang up. For an unexpected recorded sales pitch, do not press a key to speak to an operator or supposedly remove yourself from a list, and do not call the number back. Interacting may lead to more calls.
- Do not treat caller ID as proof. Scammers can fake the displayed name or number, and legitimate-looking caller ID does not establish who is calling. Filters may also miss scam calls.
- Report the call to the FTC. Use DoNotCall.gov and provide your number, the displayed number (even if you suspect it was spoofed), any callback number, and the date and time if known. If you lost money, report it at ReportFraud.ftc.gov.
- File an FCC complaint if appropriate. The FCC accepts unwanted-call complaints, but says it cannot resolve individual complaints or stop every illegal call instantly. Its unwanted-call complaint page explains its role.
The FTC’s Registry FAQ states that companies violating the Registry or placing illegal robocalls may face a maximum fine of up to $50,120 per call. That is an enforcement maximum, not a prediction of compensation to an individual consumer.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
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