We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 7 min read · Independent comparison
If you want to turn an iPhone that has no headphone jack into a wired-listening device with a certified, no-error adapter, choose Untvie Apple MFi Certified; if you need actual headphones for a child that cap the volume at a safe level, choose MEE audio KidJamz KJ55. These two products sit on opposite ends of the same problem. One is a tiny Lightning-to-3.5mm dongle that lets you keep using the wired headphones you already own. The other is a complete USB-C on-ear headset built for kids, with a volume limiter and light-up ear cups baked in. If your question is "headphones for iPhone," the honest answer is that only one of these is headphones at all.
• Untvie Apple MFi Certified — biggest strength: an Apple MFi certified Lightning-to-3.5mm adapter that adds a real headphone jack to older iPhones and iPads with no error pop-up and no extra software.
• Untvie Apple MFi Certified — biggest trade-off: it is not a headphone and it does not support USB-C, and the manufacturer explicitly notes it is not for making calls.
• MEE audio KidJamz KJ55 — biggest strength: a genuine on-ear headset with an 85dB volume limiter, an integrated mic and remote, and USB-C audio for iPhone 15/16 and iPad.
• MEE audio KidJamz KJ55 — biggest trade-off: its built-in safety limit is the whole point, so it will never get loud, and it is designed for kids ages 4+ rather than adult listening.
• Who each pick is for: Untvie for anyone with a Lightning iPhone who wants to keep using their own wired headphones or car aux; KidJamz KJ55 for parents who want safe, durable, fun headphones for a child on a USB-C device.
The Untvie adapter is a problem-solver, not a listening device. Apple removed the headphone jack years ago, and the people who felt it most were the ones with a good pair of wired headphones, an aux cable in the car, or a home stereo that still expects a 3.5mm plug. This dongle plugs into the Lightning port and gives that jack back. Because it carries Apple's MFi certification, it is built to avoid the "this accessory is not supported" message that cheap uncertified adapters are known for, and it needs no app or setup — you plug it in and play.
Who should buy it: anyone with an iPhone 14, 13, 12, 11, X, XR, 8, 7, 6s, or an iPad or iPod touch that uses Lightning and still wants wired audio. Who should skip it: anyone on an iPhone 15 or 16, because this is a Lightning adapter and does not support USB-C — it will not fit. Also skip it if you plan to take calls, since Untvie states plainly that it is not for making calls. Think of it as a music, video, and aux-cable tool.
MEE audio KidJamz KJ55: Who It's For
The KidJamz KJ55 is a different kind of product entirely: a finished pair of on-ear headphones made for children, in lavender, with a USB-C connection. The headline feature is the volume limiter, which holds sound pressure below the recommended 85dB ceiling. That is the number parents should care about, because young ears are more vulnerable to loud, long listening sessions. There is also a switch that temporarily disables the limiter, which MEE audio includes for noisy environments like a plane or a car on the highway — a sensible compromise, since a child who cannot hear anything will just turn the volume up on the source anyway.
The second thing kids notice is the lighting. Each ear cup has graphics that light up with 8 color patterns, and it runs without batteries because it draws power over the cable. A single press cycles through colors and patterns, and a three-second press turns the lights off for when you want quiet. Beyond the fun factor, the build is aimed at real children: a tangle-resistant cable, reinforced connector, padded ear cushions, and an adjustable cushioned headband for a secure fit for boys and girls ages 4 and up.
It is also a working headset, not just a listening device. The integrated microphone and remote button cover online learning, video chat, gaming, and phone calls on compatible devices. And because it is USB-C, it works with the iPhone 16, 16 Pro, 15, and 15 Pro, along with iPads, Kindle Fire tablets, MacBooks, laptops, and other USB-C hardware. On paper the audio specs are modest — a 32-ohm dynamic driver, 20Hz to 20kHz — but that is exactly the profile you want in a safe-listening kids' headset, since it pairs easily with phones and does not demand a headphone amp. Who should skip it: adults who want full-volume, high-fidelity listening, or anyone on a Lightning iPhone, because this is a USB-C headset and will not fit those ports.
• Best for adding a headphone jack to a Lightning iPhone → Untvie Apple MFi Certified. It restores the 3.5mm port on iPhone 14 and older, plus Lightning iPads and iPods.
• Best for a child's first real headphones → MEE audio KidJamz KJ55. The 85dB limiter, 8-pattern LED ear cups, and adjustable fit are all designed around kids ages 4+.
• Best for USB-C iPhone owners → MEE audio KidJamz KJ55. It works with iPhone 15 and 16 series directly; the Untvie adapter does not support USB-C at all.
• Best for using your own wired headphones or a car aux cable → Untvie Apple MFi Certified. That is literally its job, and the MFi chip means no compatibility error message.
• Best for phone calls and video chat → MEE audio KidJamz KJ55. It has a built-in mic and remote; Untvie states its adapter is not for making calls.
• Best for travel and shared packing → Untvie Apple MFi Certified. The two-pack means one adapter lives in the car and one in your bag, so you always have wired audio ready.
• Best for durability around kids → MEE audio KidJamz KJ55. Tangle-resistant cable, reinforced connector, and a cushioned headband built to survive daily use.
• Best for adult full-volume listening → neither, honestly. Untvie is an adapter, and KidJamz is deliberately volume-limited for children.
In my opinion, these two only compete if you have not figured out which problem you actually have. If you own an iPhone 14 or older and want to keep using wired headphones, an aux cable, or a home stereo, I would buy the Untvie Apple MFi Certified adapter — the MFi chip and the two-pack make it the practical pick, and it is the only one of the two that solves that specific problem. If you are shopping for a child on a USB-C iPhone or iPad, I would buy the MEE audio KidJamz KJ55, because the 85dB limiter, built-in mic, and kid-proof build are exactly what a parent should be paying for. Buy the adapter for hardware, and the headphones for a young listener. Check the current price on Amazon for whichever one matches your device before you commit.
FAQ
how to use headphones for iphone
If your iPhone has a Lightning port (iPhone 14 and earlier), plug a Lightning-to-3.5mm adapter like the Untvie into the phone, then plug your wired headphones into the adapter's jack. If your iPhone is USB-C (iPhone 15 or 16), plug USB-C headphones like the KidJamz KJ55 straight into the port — no adapter needed.
The iPhone 15 uses USB-C, not Lightning, so the Untvie Lightning adapter will not fit. Use a USB-C headset such as the MEE audio KidJamz KJ55, which connects directly to the iPhone 15 and 15 Pro. Just plug it in and it works, with no software required.
how to use wired headphones for iphone 16
The iPhone 16 and 16 Pro are also USB-C devices. Plug a USB-C headset like the KidJamz KJ55 directly into the port, and the built-in mic and remote will work for calls and video chat on compatible devices. Again, a Lightning adapter is not the right accessory for this phone.
how to use wired headphones for iphone
First check your port. Lightning iPhones need an MFi-certified Lightning-to-3.5mm adapter, which is what the Untvie two-pack provides. USB-C iPhones take USB-C headphones directly. In both cases, wired audio needs no pairing, charging, or app — you plug in and listen.
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See also: Bokexing Earbuds vs iMangoo Apple MFi-Certified Soft, Aechorhy USB C & vs FUHAYA Apple MFi Certified: USB C, MEE audio KidJamz KJ55BT vs Aurotlu 2026: Wireless on Ear