The Samsung Galaxy S26 series has finally been released after much anticipation . Compared to the Samsung Galaxy S25 series, the Samsung Galaxy S26 series has been updated in every aspect. The Samsung Galaxy S26 Ultra , as the top model of the Samsung S series, has always been one of the most anticipated models.
Some customers who have purchased the Samsung Galaxy S25 Ultra may be wondering what updates the Samsung Galaxy S26 Ultra has, such as its size and internal configuration. Since the exterior is not significantly different from the Samsung Galaxy S25 Ultra , some may be wondering whether smartphone cases are compatible.
When buying a smartphone case, the first thing to consider is the compatibility of the case. So today , we'll take a closer look at the size and internal updates of the Samsung Galaxy S26 Ultra and answer questions about case compatibility between the two models.
Samsung Galaxy S26 Ultra Dimensions and Specifications
Size and Weight: According to the official data, the Samsung Galaxy S26 Ultra measures 163.6mm x 78.1mm x 7.9mm (H x W x D) and weighs 214g . Due to differences in internal configuration, the weight may vary slightly depending on the region.
Screen Size and Aspect Ratio: According to official data, the Samsung Galaxy S26 Ultra has a 6.9- inch screen , with an actual display area of approximately 6.7 inches excluding the rounded corners and front camera notch . The screen aspect ratio is approximately 19.5:9 , and the screen resolution is 3120 x 440 pixels.
Samsung Galaxy S25 Ultra Dimensions and Specifications
Size and Weight: According to the official website, the Samsung Galaxy S25 Ultra measures 162.8mm x 77.6mm x 8.2mm (height x width x thickness) and weighs approximately 218g .
Screen size and aspect ratio : The Samsung Galaxy S25 Ultra has a 6.9- inch screen with a resolution of 1440 x 3120 pixels and an aspect ratio of 19.5:9 .
This can be summarised using a table as follows:
|
Parameters |
S25 Ultra |
S26 Ultra |
difference |
|
expensive |
162.8mm |
163.6mm |
+0.8 mm |
|
width |
77.8mm |
78.1mm |
+0.3 mm |
|
Thickness |
8.2mm |
7.9mm |
-0.3 mm |
|
Screen size |
6.9 inches |
6.9 inches |
+0.0 inches |
Will an S25 Ultra case fit an S26 Ultra ?
Based on the size specifications above, the Samsung Galaxy S26 Ultra is slightly larger and slightly thinner than the Samsung Galaxy S25 Ultra . While the difference in dimensions is only a few millimeters, this difference can have a significant impact on the overall fit of your smartphone case.
In addition to the differences in size and specifications , there are also some differences in the camera module design between the Samsung Galaxy S26 Ultra and the Samsung Galaxy S25 Ultra . Internally, the Samsung Galaxy S26 Ultra 's camera module has undergone some slight tweaks compared to the Samsung Galaxy S25 Ultra , resulting in an overall improvement in camera performance. Visually, the Samsung Galaxy S26 Ultra 's camera module is noticeably wider and more protruding, while the Samsung Galaxy S25 Ultra 's camera module is slimmer and located closer to the edge of the device.
Therefore, the Samsung Galaxy S26 Ultra and the Samsung Galaxy S25 Ultra cannot use the same case. Differences in size and camera module have a significant impact on case fitment. They also affect accurate button operation, camera protection, and the overall feel of the phone. Therefore , rather than simply using a Samsung Galaxy S25 Ultra case on the Samsung Galaxy S26 Ultra, we recommend choosing a case designed specifically for the Samsung Galaxy S26 Ultra .
What kind of phone case is suitable for the Samsung Galaxy S26 Ultra ?
Everyday protection and material selection
The most important thing about a smartphone case is its everyday protective performance. Before purchasing, check the model number and then the material. By choosing the right material, you can choose a smartphone case that suits your preferences.
Smartphone cases have different benefits depending on the material. For example, TPU and silicone phone cases easily meet basic everyday protection needs and protect your phone from external scratches. TPU+PC phone cases offer even greater drop resistance. Aramid fiber phone cases are thin and almost weightless when worn, making them suitable for users who prefer the feel of a bare phone. Vegan leather phone cases are gentler on the skin and are suitable for users who prefer the texture of leather.
Lens protection
It's important to protect not only the phone as a whole, but also the lens, so when choosing a phone case, pay attention to whether it has lens protection.
Full-coverage lens protection cases absorb external shocks to prevent lens damage in the event of a drop, while partial-coverage cases feature a raised lens section and a spring-loaded design to cushion the lens in the event of a drop.
Magnetic Accessories
The Samsung Galaxy S26 Ultra supports wireless charging up to approximately 25W , which is an overall improvement over its predecessor, the Samsung Galaxy S25 Ultra . However , since the Samsung Galaxy S26 Ultra does not have a built-in magnetic ring, it cannot be magnetically fastened to a charger, even though it supports Qi2 .
Therefore, when choosing a smartphone case , we recommend choosing one with a magnetic ring to enable the Samsung Galaxy S26 Ultra to achieve Qi2 magnetic alignment wireless charging. The magnetic ring on the case supports magnetic charging for the Samsung Galaxy S26 Ultra, just like the automatic magnetic alignment feature of MagSafe.
aulumu Samsung Galaxy S26 Ultra smartphone case
For the Samsung Galaxy S26 Ultra , aulumu currently offers two types of phone cases: a TPU shockproof case and an aramid fiber case .
S26 Ultra TPU Phone Case
TPU is one of the most commonly used smartphone case materials, and aulumu has released a TPU phone case for the Samsung Galaxy S26 Ultra . The one-piece TPU full-coverage design effectively absorbs external wear and impacts. The aluminum lens hood protects the camera lens at all times.
The back pattern is made using a double-layer IMD process to maintain transparency and prevent wear . The back line and magnetic ring are also made of luminous material, absorbing light and emitting a beautiful glow even in dark places. The magnetic ring design also helps activate the Samsung Galaxy S26 Ultra 's Qi2 function. The side button is made of metal, providing a realistic tactile feel. 
S26 Ultra Aramid Fiber Smartphone Case
In addition to TPU smartphone cases, aulumu also offers a Samsung Galaxy S26 Ultra case made from aramid fiber . Crafted from aerospace-grade aramid fiber, it's lightweight yet extremely durable, combining protection with a slim design. The rear heat dissipation structure naturally cools the device even during heavy use, and the temperature-sensing heat sink allows you to check the device's temperature at a glance. The raised aluminum camera frame provides enhanced lens protection for safer use. Additionally, the case features a built-in magnetic ring, making it compatible with most wireless chargers and magnetic accessories.
conclusion
Before choosing a phone case, it's helpful to know the size of your case. Even phone cases from the same series may look similar across different models, but there may be slight differences in size and other details. By comparing sizes, you 'll find that a case for the Samsung Galaxy S25 Ultra won't fit the Samsung Galaxy S26 Ultra . Therefore, to ensure the best protection for your phone, we recommend choosing a case specifically designed for the Samsung Galaxy S26 Ultra .
