Phone Too Big for Your Car Mount? Best Solutions for Large Phones
By WillItSnap Team · March 2026
You bought a car mount, clipped your phone in, and the grips do not reach. Or they barely hold on, and your phone wobbles free on the first bump. Modern smartphones keep getting wider — flagship "Ultra" and "Pro Max" models now routinely exceed 77mm in width, and adding a case pushes them to 80mm or more. Most standard car mounts were designed for phones topping out at 82-85mm.
This guide identifies the widest phones, shows how case thickness compounds the problem, and covers three proven solutions: magnetic mounts, extra-wide grip mounts, and adjustable arm mounts.
The Widest Phones in Our Database
These phones are wider than 77mm — the point where standard car mounts start to struggle, especially with a case on:
| Phone | Width (bare) | Width (with case) | MagSafe/Qi2 | Size Category |
|---|---|---|---|---|
| Galaxy S24 Ultra | 79mm | ~82mm | No | Large |
| Galaxy A05 | 78.2mm | ~81.2mm | No | Large |
| Galaxy A34 | 78.1mm | ~81.1mm | No | Large |
| iPhone 8 Plus | 78.1mm | ~81.1mm | No | Large |
| Galaxy S23 Ultra | 78.1mm | ~81.1mm | No | Large |
| iPhone 14 Plus | 78.1mm | ~81.1mm | Yes | Large |
| iPhone 13 Pro Max | 78.1mm | ~81.1mm | Yes | Large |
| iPhone 12 Pro Max | 78.1mm | ~81.1mm | Yes | Large |
| Galaxy A14 | 78mm | ~81mm | No | Standard |
| Galaxy A35 5G | 78mm | ~81mm | No | Standard |
| iPhone 17 Pro Max | 78mm | ~81mm | Yes | Standard |
| Galaxy S22 Ultra | 77.9mm | ~80.9mm | No | Standard |
| Galaxy A16 5G | 77.9mm | ~80.9mm | No | Standard |
| iPhone 15 Plus | 77.8mm | ~80.8mm | Yes | Standard |
| iPhone 11 Pro Max | 77.8mm | ~80.8mm | No | Standard |
| iPhone 16 Plus | 77.8mm | ~80.8mm | Yes | Standard |
| iPhone 14 Pro Max | 77.6mm | ~80.6mm | Yes | Standard |
| Galaxy S25 Ultra | 77.6mm | ~80.6mm | Qi2 | Standard |
| Galaxy A24 | 77.6mm | ~80.6mm | No | Standard |
| iPhone 16 Pro Max | 77.6mm | ~80.6mm | Yes | Standard |
"Width with case" assumes a standard case adding ~3mm total. Rugged cases add more. Red values may not fit standard car mounts.
Solution 1: MagSafe / Magnetic Car Mount (No Size Limit)
Why This Works
Magnetic car mounts do not grip the sides of your phone at all. Instead, they use strong magnets to hold the phone flat against a mounting surface. Since there are no clamps or arms, phone width is irrelevant. A 70mm phone and a 90mm phone mount exactly the same way.
This is the best solution for large phones — period. If your phone has MagSafe (all recent iPhones) or Qi2 (Samsung Galaxy S25 series, Pixel 9 series), you can use a magnetic mount out of the box. For phones without built-in magnets, a MagSafe-compatible case adds the necessary magnet ring. See our MagSafe compatibility guide for full details.
Large Phones With Built-In MagSafe or Qi2 (Ready for Magnetic Mounts)
Solution 2: Extra-Wide Grip Car Mounts
Why This Works
Some car mounts are specifically designed to accommodate phones up to 90-95mm wide. These mounts feature wider arms, stronger springs, and larger cradles than standard models. They cost a little more but will hold even the widest phones with a rugged case.
When shopping for extra-wide mounts, check the "maximum width" or "phone size compatibility" in the product listing. Look for mounts that explicitly mention "fits phones up to 7 inches" or "extra-wide grip." Dashboard and windshield mounts tend to have wider grips than vent-clip mounts.
Solution 3: Dashboard/Windshield Mounts With Adjustable Arms
Why This Works
Unlike vent-clip mounts with fixed-width spring mechanisms, dashboard and windshield mounts often feature long telescoping arms with adjustable grip width. These can accommodate a much wider range of phone sizes and typically hold the phone more securely for navigation use.
Suction cup dashboard mounts and gooseneck windshield mounts are the most versatile option for large phones when a magnetic mount is not an option. Many include one-touch or gravity-activated clamping that automatically adjusts to the phone width. For phone-specific car mount recommendations, visit our best car mounts for large phones guide.
Recommended Car Mounts for Large Phones
Shop iPhone 17 Pro Max Accessories
Shop Galaxy S25 Ultra Accessories
Shop Pixel 9 Pro Accessories
Related Guides
Frequently Asked Questions
What is the maximum phone width for most car mounts?▼
Most standard car mounts with spring-loaded grips accommodate phones up to about 82-85mm wide (including the case). Since a typical case adds 2-3mm per side, that means phones wider than about 78mm start to become a tight fit. Ultra-wide phones like the Galaxy S25 Ultra (77.6mm bare) may not fit some mounts when a rugged case is added.
Do MagSafe car mounts work with large phones?▼
Yes, magnetic car mounts have no size limit since they do not grip the phone — they hold it magnetically. This makes them the ideal solution for large phones. The phone needs either built-in MagSafe/Qi2, or a MagSafe-compatible case with magnets. Most magnetic car mounts can hold phones up to 250 grams without any issues.
Will a phone case make my phone too big for the car mount?▼
A typical case adds 2-3mm per side (4-6mm total width). A slim case adds about 1.5mm per side. A rugged case can add 4-5mm per side. If your phone is already near the mount maximum width, even a slim case could push it over. Check the mount specifications and compare against your phone width plus case thickness.
What type of car mount is best for large phones?▼
For large phones, magnetic (MagSafe) mounts are the best option since they have no size limit. If you prefer a grip-style mount, look for extra-wide cradle mounts or dashboard mounts with adjustable arms rated for 90mm+ width. Vent mounts with fixed-width clips tend to have the narrowest grip range and should be avoided.
Can I use a car mount with a phone case that has a kickstand or wallet?▼
Grip-style mounts generally will not work with wallet cases or cases with protruding kickstands since they add significant bulk to one side. Magnetic mounts work if the case is MagSafe-compatible, but the added weight of a wallet attachment can reduce the magnetic hold strength. For maximum compatibility, use a slim MagSafe case and keep wallet accessories separate.
The Bottom Line
If your phone is too big for your car mount, the simplest and most future-proof solution is a magnetic mount. MagSafe and Qi2 car mounts have no size limit, hold phones securely, and make mounting a one-second snap instead of a fumble with spring-loaded arms. Most modern flagship phones already have built-in magnet support.
For phones without built-in magnets, a MagSafe-compatible case adds the necessary magnet ring for under $20. Alternatively, look for extra-wide grip mounts rated for phones up to 90mm+ if you prefer a traditional cradle-style mount. Check your phone's specific car mount page on our site for personalized recommendations based on your phone's exact dimensions.