Best Car Phone Mounts for Large Phones (2026): Pro Max, Ultra & Plus
By WillItSnap Team · March 15, 2026
If you own a Pro Max, Ultra, or Plus phone, you've probably experienced the frustration: your phone doesn't fit in the car mount that worked fine with your old phone. Large phones need mounts designed for their size — and this guide helps you find the right one.
We analyzed 171 phones in our database and found 27 models wider than 77mm that may not fit standard car mounts.
The Width Problem
Most car phone mounts are designed for phones up to about 75mm wide. That was fine a few years ago, but today's large phones regularly exceed 77mm — and with a case adding another 3-6mm, you can easily hit 83mm+ total width. Standard mounts simply can't stretch that far.
The Real Number to Watch: Width + Case
Your phone's bare width isn't what matters — it's the width with a case. A typical case adds ~3mm to each side, so a 78mm phone becomes ~84mm. Always check the mount's maximum width spec and compare it to your phone + case width.
Large Phones That Need Special Mounts
These phones from our database are wider than 77mm and may not fit standard car mounts:
| Phone | Width | Width + Case | Size Category | MagSafe/Qi2 |
|---|---|---|---|---|
| Galaxy S24 Ultra | 79mm | ~82mm | Large | No |
| Galaxy A05 | 78.2mm | ~81.2mm | Large | No |
| Galaxy A34 | 78.1mm | ~81.1mm | Large | No |
| iPhone 8 Plus | 78.1mm | ~81.1mm | Large | No |
| Galaxy S23 Ultra | 78.1mm | ~81.1mm | Large | No |
| iPhone 14 Plus | 78.1mm | ~81.1mm | Large | MagSafe |
| iPhone 13 Pro Max | 78.1mm | ~81.1mm | Large | MagSafe |
| iPhone 12 Pro Max | 78.1mm | ~81.1mm | Large | MagSafe |
| Galaxy A14 | 78mm | ~81mm | Standard | No |
| Galaxy A35 5G | 78mm | ~81mm | Standard | No |
| iPhone 17 Pro Max | 78mm | ~81mm | Standard | MagSafe |
| Galaxy S22 Ultra | 77.9mm | ~80.9mm | Standard | No |
| Galaxy A16 5G | 77.9mm | ~80.9mm | Standard | No |
| iPhone 15 Plus | 77.8mm | ~80.8mm | Standard | MagSafe |
| iPhone 11 Pro Max | 77.8mm | ~80.8mm | Standard | No |
| iPhone 16 Plus | 77.8mm | ~80.8mm | Standard | MagSafe |
| iPhone 14 Pro Max | 77.6mm | ~80.6mm | Standard | MagSafe |
| Galaxy S25 Ultra | 77.6mm | ~80.6mm | Standard | Qi2 |
| Galaxy A24 | 77.6mm | ~80.6mm | Standard | No |
| iPhone 16 Pro Max | 77.6mm | ~80.6mm | Standard | MagSafe |
Showing top 20 of 27 large phones. Use our compatibility tool to check your specific phone.
MagSafe Mounts Solve Everything
The simplest solution for large phones? Skip the clamp entirely. MagSafe and Qi2 magnetic mounts hold your phone with strong magnets — no squeezing, no width limitations, no fumbling.
9 Large Phones with MagSafe/Qi2 Support
Even if your phone doesn't have built-in MagSafe, you can add magnetic compatibility with a MagSafe-compatible case or an adhesive magnetic ring ($5-8 on Amazon). This opens up the entire world of magnetic mounts.
Best Mounts by Type
Vent Mounts
Pros: Compact, easy to install, no adhesive residue.
Cons: Heavy phones can cause sagging. Blocks AC airflow. Not all vent shapes are compatible.
Best for: Standard-size phones under 200g. Not ideal for Pro Max / Ultra models.
Shop Vent Mounts on AmazonDashboard / Suction Cup Mounts
Pros: Most stable option. Adjustable height and angle. Supports heavy phones.
Cons: Suction can fail in heat. May leave residue. Bulkier than vent mounts.
Best for: Large and heavy phones. Best stability for Pro Max and Ultra models.
Shop Dashboard Mounts on AmazonCD Slot Mounts
Pros: Very secure. Low profile. No adhesive needed.
Cons: Only works if your car has a CD slot. Becoming rare in newer vehicles.
Best for: Cars with CD slots (pre-2020 models). Surprisingly stable for large phones.
Shop CD Slot Mounts on AmazonCup Holder Mounts
Pros: Accommodates ANY phone size. Very stable base. No dashboard clutter.
Cons: Uses a cup holder. Lower viewing angle. May be harder to reach.
Best for: The absolute largest phones. No size restrictions since it doesn't clamp the phone's sides.
Shop Cup Holder Mounts on AmazonOur Top Picks by Phone
Shop Galaxy S24 Ultra Accessories
Shop Galaxy A05 Accessories
Shop Galaxy A34 Accessories
Shop iPhone 8 Plus Accessories
Shop Galaxy S23 Ultra Accessories
Related Guides
Frequently Asked Questions
What phone width is too big for a standard car mount?▼
Most standard car mounts accommodate phones up to 75-80mm wide without a case. Once you add a case (typically +3mm per side), phones wider than 77mm often exceed the clamp range. We found 27 phones out of 171 in our database that fall into the "large" or "ultra" category.
Are MagSafe car mounts strong enough for large phones?▼
Yes. MagSafe magnets are rated to hold well over 300 grams, and even the heaviest phones (like the iPhone 17 Pro Max) are under 240g. The magnetic hold is actually more secure than many clamp mounts, especially on bumpy roads where clamps can vibrate loose.
Will a car mount block my phone's wireless charging?▼
Standard clamp mounts do not block wireless charging, but they also don't provide it. MagSafe and Qi2 car mounts can charge your phone wirelessly while mounted. Look for mounts labeled "MagSafe charging mount" or "Qi2 car charger" for this dual functionality.
Vent mount vs dashboard mount — which is better for large phones?▼
Dashboard or suction-cup mounts are generally better for large phones. Heavy phones can cause vent mounts to sag or tilt, and they block airflow from your AC. Dashboard mounts provide a more stable mounting point with better viewing angles for larger screens.
Do I need a special mount for a phone with a case?▼
Most car mounts accommodate cases up to 3-4mm thick. However, very thick rugged cases (like OtterBox Defender at 5-6mm) may not fit in clamp-style mounts. MagSafe mounts work through most cases as long as the case is MagSafe-compatible.
The Bottom Line
Large phones are not going away — screens keep growing. If you own a Pro Max, Ultra, or Plus model, your best options are a MagSafe/Qi2 magnetic mount (no size restrictions at all) or a dashboard suction mount rated for extra-wide phones.
Avoid cheap vent mounts for heavy phones — they'll sag on the first pothole. Invest $20-40 in a quality mount and it will outlast multiple phone upgrades.