Dual App در سامسونگ
Bubba Lual
I have just purchased a new Galaxy A34 5G dual SIM phone. It is advertised as being Dual SIM +microSD card. When I purchased it I discussed with the sales agent about fitting these 3 cards: SIM1, SIM2 + microSD saying I have an existing Galaxy A51 which similarly supports 3 such cards. My A51 has a tray with 3 slots, (one for each of the 3 cards). I asked whether the A34 supplied with a similar 3 slot tray and was told "yes".
However, when I installed my A34 I discovered there were only 2 tray slots - 1 smaller and the other larger. Clearly the larger slot will take a microSD but no 3rd slot as I expected. The manual is a little unclear, but I know some manufacturers have card slots which take 2 separate cards in one slot by
- one card facing up one way and
- the other facing the opposite direction.
My question is will the A34 take all three cards with the larger slot taking both a SIM + microSD facing opposite directions or do I just have the options of either:
- 2 SIMS or
- 1 SIM + microSD
?
OK, it's a pity I was misinformed. Interestingly I've got a Samsung tablet which has a single card slot. But after purchase I discovered to my surprise it can actually take two separate cards in the one slot! It's a pity they haven't implemented the same idea on my A34 but, never mind, I still like the phone because of other good features it has!
Yeah, just one of those things. I have dual sim + eSim BUT no micro SD, which some people miss. I guess it's just one of those 'what you value the most' things.
If you've had the phone less than 14 days, you could maybe check with the retailer about a refund or swap for another wonderful Samsung device?
Yes, I understand that. Certainly in the past default storage was so low that often I couldn't even get all my apps installed, so I found SD card pretty essential. Nowadays I go for at least 256GB internal storage which covers all my basic needs. However I would still like to have some "alternative" storage on SD card for stuff like books, video/films etc. I have a few 512 GB SD cards but, as you say, "modern" mobiles generally don't accommodate them. What kind of big internal storage capacity is now on offer on the more upmarket devices? Is there any kind of external (plugin) storage available these days on any mobiles?
The large, bright 6.8-inch Dynamic AMOLED 2x display with a 20:9 aspect ratio is a great screen for any type of content creation, thanks to a high 3200 x 1440-pixel resolution and flexible frame rates up to 120 Hz.
With a DXOMARK Camera overall score of 121, the Samsung Galaxy S21 Ultra 5G (Exynos) delivers a good camera performance but lags somewhat behind the best competitors in the ultra-premium segment. Unexpectedly, it also scores lower than its predecessor S20 Ultra 5G at 126.
The Photo score of 128 is 16 points lower than the top-ranked Huawei Mate 40 Pro+. While the Samsung does many things well, there is some room for improvement in most test categories, especially when considering its top-end camera specifications.
Target exposure is usually accurate and dynamic range is wide, showing good detail in both highlight and shadow areas of the frame. HDR processing can be a little unstable, though, with noticeable variation between consecutive shots of the same scene.
Color looks nice and skin tones are pleasant when shooting at reasonable light levels, but saturation decreases in low light. The autofocus system also slows down in low-light and high-contrast scenes, but otherwise the device mostly delivers accurately focused images.
The Zoom score of 76 is helped by a decent ultra-wide performance. The ultra-wide camera offers an expansive field of view, but like with the primary wide camera, noise has a negative impact on image quality. The tele does not quite live up to the expectations raised by the impressive-looking dual-tele setup. The level of detail is fairly low across the tele zoom range, with unnaturally-rendered texture and fusion artifacts.
With a Video score of 98, the Samsung is also not on the same level as its most direct rivals for video, matching the scores of slightly older and less expensive devices, such as the Huawei P40 and the Google Pixel 4a.
The Samsung Galaxy S21 Ultra (Exynos) achieves a Photo score of 128. In this section, we take a closer look at how each sub-score was determined and compare image quality against some key competitors.
On a side note: Our testers also observed that Samsung has chosen a fairly neutral rendering for low color temperature (warm) light sources. While this can result in pleasant color, it also seems to increase image noise in such scenes. This tradeoff does not seem very well managed overall and lower noise levels should be achievable (see the Noise section below for more).
The S21 Ultra 5G also produces more image noise than its predecessor, the S20 Ultra 5G. This is quite visible in this sample. Noise on the S21 Ultra 5G often appears as structured noise and includes colored chroma noise, which is more intrusive than grainy luminance noise.
Image artifacts are pretty well controlled overall on the Galaxy S21 Ultra 5G (Exynos). However, our testers observed a few artifacts, including color quantization and ringing; you can see the latter pretty clearly in this image.
There is also a loss of acutance in the field and flare in some images. The latter can be clearly seen in this sample below. Some flare is also noticeable in the Huawei and Apple images, but the effect is much weaker.
When shooting in low-light conditions at night, white balance and color rendering tend to be accurate even in challenging lighting conditions. The same is true for for target exposure, but the level of captured detail is very low if the camera does not trigger the flash.
However, bokeh quality is lower than on the predecessor S20 Ultra 5G (Exynos), which scored 75 in this category. The older model delivered better detail, lower noise, and slightly more precise subject isolation from the background.
Preview for HDR and bokeh effect is decent but not quite perfect. The preview image has some HDR processing and a bokeh effect (when shooting in bokeh mode) applied to it, but the effect looks a little different to the final capture. HDR processing is stronger on the latter and the bokeh effect shows much better subject isolation and a more realistic blur gradient.
The Samsung Galaxy S21 Ultra 5G (Exynos) achieves a decent Zoom score of 76, putting it on the same level as its stablemate Note20 Ultra 5G and just squeezing into the top ten in our ranking. The Zoom score includes the tele and wide sub-scores. In this section, we take a closer look at how these sub-scores were achieved and compare zoom image quality against some key competitors.
Results are similar at 100 lux and medium-range (approximately 4x) zoom. The Mate 40 Pro is clearly the best device in this comparison, with the S21 lagging behind its own predecessor, capturing less detail, and showing slightly more noise.
Many tele-zoom images also show strong fusion artifacts that occur when image data from two or more cameras is merged to create the final image. For example, a quite intrusive ghosting effect is visible in the background of this portrait shot:
In this indoor comparison, the Samsung image shows a slightly warm cast and pretty strong noise. The Huawei captures a noticeably cleaner image but comes with a strong blueish cast. The Apple image is also quite noisy but delivers the best color.
The S21 Ultra comes with 8K video recording and HDR10+, but the former offers hardly any stabilization, while the latter is not available in 4K resolution. We decided to test the device in 4K resolution and at 60 fps because those settings offered the best overall tradeoff among all image quality attributes.
There is some room for improvement for color in video clips. White balance is pretty stable in all tested conditions, but a slight color cast is often visible, too. In addition, saturation levels are on the low side across all light levels.
Noise is visible in video clips recorded in all conditions. In addition to luminance noise, strong chromatic noise becomes visible in low light. Slight luminance noise is also visible in bright outdoor light, but the difference between the S21 Ultra and the iPhone 12 Pro Max and Huawei Mate 40 Pro is most noticeable in indoor conditions and low light.
There is no doubt the Samsung Galaxy S21 Ultra 5G is an exciting device with a powerful chipset and impressive display. If camera is a priority there are currently a number of better options to pick from, but there is hope that Samsung might be able to fix some of the issues identified in this review with a firmware update and thus reduce the gap between the S21 Ultra 5G and top-ranked devices.
After publishing our Samsung Galaxy S21 Ultra 5G (Exynos) Camera, review we received a number of comments from readers who were concerned that we had not used the latest firmware version for the test. We used the latest firmware version available when testing started; however, Samsung released new firmware versions between the start of testing and the publication of the review article.
To perform the checks we partially retested the S21 Ultra 5G (Exynos) using firmware version G998BXXU1AUB9. This is not the very latest version but it is the latest version available for our specific test unit (over-the-air or OTA updates are deployed progressively) on Friday, March 5th, the day we performed the checks.
We also did some checks on tele-zoom quality. Detail has slightly improved at close range but performance is very unstable at long range, so overall there is no improvement to the tele or zoom scores.
Exynos is mostly based on the ARM Cortex cores with the exception of some high end SoCs which featured Samsung's proprietary "M" series core design; though from 2021 onwards even the flagship high-end SoC's will be featuring ARM Cortex cores.[2]
In 2010, Samsung launched the Hummingbird S5PC110 (now Exynos 3 Single) in its Samsung Galaxy S smartphone, which featured a licensed ARM Cortex-A8 CPU.[3] This ARM Cortex-A8 was code-named Hummingbird. It was developed in partnership with Intrinsity using their FastCore and Fast14 technology.[4]
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