Samsung Galaxy S20 wireless charging

Wireless charging problems for the Samsung Galaxy S20 and Note 20

Some wireless charging problems recorded on Samsung Galaxy S20 and Note 20 specimens are not to be considered negligible. Although this is not a very widespread anomaly, on the official Samsung forum and on others relating to the smartphone world, there are specific testimonials to about. Precisely the charging procedure would not be successful at all or in any case in fits and starts, with a series of continuous resumes and pauses.

Samsung Galaxy S20 wireless charging

The well-known site SamMobile reports a sort of overall report relating to the problems of wireless charging with the two top of the range. In particular, it would seem that only the Ultra models of the current flagships are affected precisely by the difficulties. The anomalies would then manifest themselves when third-party accessories are used for the charging procedure: however, the latter have always worked in the past but, on the contrary, not at this time.

What could be the causes attributable to the malfunctions? It would seem that the wireless charging problems have arisen following some software updates, identified as the security patches of the months of September and October. The builds of the packages reported in the testimonials of the users are many and correspond to different models of the devices, distinguished by country of belonging and operator’s brand. If so, the difficulties would certainly be overcome with a new intervention by the developers but we do not know exactly when this will arrive.

For the moment, the anomalies described so far do not seem to have particularly affected the Italian users. However, the situation is constantly evolving and it is by no means certain that there are also reports of owners of European devices with the same difficulties. Probably in the coming days we will get new details on this, perhaps an official feedback from the same manufacturer through its channels. Any new news will be reported as soon as it is available.

Redmi Note 9S It is an LCD LED unit with IPS technology that provides acceptable brightness and discreet color reproduction

Redmi Note 9S review: many beautiful things, but be careful before ordering

Since Redmi has become an independent company from Xiaomi (from which it still receives both hardware and software support), the number of smartphones with this brand has taken flight. The company is used to launching over 10 different smartphones every year, many of which with similar characteristics that certainly do not facilitate the choice for people.

We have been testing the smartphone for several days and although we have found many positive sides, it is not perfect for its price range.

Redmi Note 9S It is an LCD LED unit with IPS technology that provides acceptable brightness and discreet color reproduction

Classic packaging for Redmi Note 9S

We do not go too far in describing the sales package, since it contains the same accessories as all the other Xiaomi and Redmi smartphones, which means the paper manuals, the PIN to extract the Nano SIM card, the matching wall power supply a cable for charging and USB Type-C data exchange and, finally, a discreet quality silicone cover.

Aesthetics “particular” and ergonomics quite comfortable for Redmi Note 9S

The choice to follow the path taken by Apple with the notch on the top of the display lasted little in Android. In the Redmi Note 9S we find a display with practically no frame around it and a small hole in the upper central part which houses the front camera. So far nothing new.

Turning the smartphone we find the real news. To differentiate their smartphones from the competition, each manufacturer has adopted a different configuration of the photographic sector. Despite the aesthetic taste, the choice of Redmi in creating a sort of central square (protruding) that houses the four cameras on a 2 × 2 grid (the top row circled in white) and then a further continuation towards the low to include the LED flash is not that made us fall in love at first sight of the Redmi Note 9S.

In our view and understanding the difficulties in creating a unique design that embraces everyone’s tastes, if the smartphone had kept only the cameras inside the black square section, the general design would have gained.

Finishing our examination of the rear body, we appreciate the use of protective glass even if this does not make any functional sense, given the absence of wireless charging.

As for the side edge, however, we were disappointed to find that polycarbonate (plastic) was used instead of a metal frame , also because other smartphones in the Redmi lineup have it.

For the rest, on the right edge we find the only power button that doubles the functions being also a capacitive fingerprint sensor ; on the lower side there is the system speaker (the only one working in multimedia terms), the USB Type-C port, the main microphone and the 3.5 mm audio jack; on the left the volume rocker has been integrated while at the top we find the trolley of the Nano SIM and the microSD (2 Nano SIM + 1 micro SD).

In terms of ergonomics we find a rather particular contrast between the fairly high weight of 209 grams that is felt every time you take the smartphone in your hand and the rounded rear body , whose curves adapt very well to the hand.

Redmi Note 9S In any 2020 smartphone that costs more than 200 euros we expect the presence of a display that has a decent overall viewing quality

One-handed use is possible but only for short periods of time, as indeed with any other modern smartphone.

Another consideration on one-handed use is made on the positioning of the fingerprint sensor. Left-handed, positioning on the right edge does not allow users to unlock the smartphone by immediately having a comfortable grip but it forces us to grab it from behind and use the left index finger before moving on to a more comfortable grip from the lower edge for use.

Discreet hardware and solid performance

At the heart of Redmi Note 9s we find the most recent Qualcomm Snapdragon 720G SoC , specifically designed to be used on mid-range smartphones that do not give up high performance and full connectivity (or rather, semi-complete on this smartphone, given the absence of the chip NFC, present only in the Pro version).

The memory equipment is practically perfect for this price range and, to be honest, going beyond the 6 GB on other models we have struggled to find advantages in terms of performance.

Display, autonomy, software and cameras we will analyze them later but, in general, the hardware equipment of Redmi Note 9s is more than good:

Dimensions: 165.7 × 76.68 × 8.8mm
Weight: 209 grams
6.67-inch IPS LCD display with 20: 9 aspect ratio, 2,400 x 1,080 pixel resolution, maximum brightness of 450 nits, HDR10 support, Corning Gorilla Glass 5 protection, 91% body-to-display ratio and TÜV Rheinland certification
SoC: Qualcomm Snapdragon 720G
Octa Core Qualcomm Kryo 465 64-bit CPU, up to 2.3GHz
GPU Adreno 618
Qualcomm AI Engine 5th generation with Hexagon Tensor Accelerator
RAM: 4/6 GB LPDDR4X (our model has 6)
Internal memory: 128 GB UFS 2.1 expandable via microSD (up to 512 GB)

Rear cameras:

48 MP Samsung ISOCELL GM248 megapixel, f / 1.79, 1.6 ?m pixel, 7 lenses, PDAF + EIS
8 megapixel ultra-wide 119 ° f / 2.2
5 megapixel macro AF (2cm-10cm)
2 megapixel depth sensor
16 megapixel front camera
5.020 mAh battery with 22.5 W fast charge support (charger included)
Connectivity: dual nano SIM, Dual 4G LTE, Wi-Fi 802.11 ac (2.4 / 5 GHz), Bluetooth 5, GPS, USB Type-C, infrared, FM radio, audio jack
Other: splash-resistant nano coating (no IPxx certification)

MIUI 11 operating system based on Android 10

The excellent performances shown on paper are also confirmed in the benchmark tests to which we have subjected it. All this, combined with the MIUI 11 based on Android 10, allows you to have incredible performances that, we are not ashamed to say, in everyday use they are identical to those of the top of the range with decidedly higher prices.

Autonomy is the workhorse of Redmi Note 9S

Whether it’s due to the huge 5,020 mAh battery, the particularly efficient SoC, the properly optimized MIUI 11 or a combination of all three of these elements , there is absolutely no doubt that the best feature of the Redmi Note 9S is its autonomy.

In terms of charging we find another plus: in addition to the support for quick charging, Redmi inside the package has integrated a power supply capable of supporting an energy output of 22.5W, bringing charging times around 90 minutes (from 0 to 50% in just 35 minutes). It is not for all manufacturers to integrate a rapid power supply in the package that supports exactly the same maximum input as the smartphone (Apple, for example, with the iPhone 11 integrates a 5W power supply in the package).

However, the fact remains that, if you intend to buy any smartphone with the intention of making it last as long as possible, the battery is undoubtedly the most fragile component: our advice is always to use wall-mounted power supplies with output not exceeding 10W (5V 2A), to keep the battery charge level always between 40% and 80% and not to leave the phone on 100% charge for long periods of time (modern smartphones have an intelligent function that, if put on charge during the night, stop it at 80% bringing it to 100% only a couple of hours before your typical awakening).


The many positive characteristics of Redmi Note 9S are not offset by many negativities.

Of course, the weight could have been lower but this would have meant a less capacious battery and therefore a worse autonomy. The goal of finding a balance to all this means that the design of a smartphone has, from the beginning, a certain target market. In the case of the Redmi Note 9S, in our opinion the target is the user who wants to have a good multimedia experience by sacrificing a little portability and ergonomics.

From the hardware point of view, we make the two real notes due to the lack of the NFC chip (a component now widely used for mobile payments and which does not have such an exorbitant cost) and to the rear photographic sector which, despite being advertised as exceptional thanks to the variety offered from the 4 sensors, it actually stops at a discrete main camera and a sufficient wide-angle and telephoto camera.

Anyway, the final judgment from our point of view is positive and, considering the base price from 229 euros (our version with 6 GB of RAM has a list price of 269 euros, even if we managed to buy it on offer at 220 euros on third-party stores), there is no better smartphone that you can buy in this price range.

wireless charging stations for Samsung Galaxy S3

Galaxy S3 Wireless Charging

It is now possible to use a wireless charging kit on the Samsung Galaxy S3 smartphone also. Fortunately, for Galaxy S3 wireless charging, you don’t need to buy an extra cover or a new charging station, if you already have one standard kit for charging wireless; in fact, you will only need a load receptor.

Indeed, unlike the case of the Samsung Galaxy S4 where it is essential for you to buy a battery cover and a special charging station that will be used only on the Samsung Galaxy S4, you only have to buy a load receiver that costs less than 10 dollars, which easily attaches to the battery of your Samsung Galaxy S3, without additional accessory weight or bulk to your mobile.

Of course, there is no question of an official accessory produced by Samsung, because as you know well, Samsung has never had the idea to do this, which makes it even more interesting since load receptor works on all standard wireless charging stations, such as the Nexus 4 among others.

As you could see from the images, the installation of the load receptor is quite easy because you can just stick it on your Galaxy S3 battery with a sticker, which makes it even more convenient if you use multiple batteries simultaneously. Then you only have to place the cover normally, and you can immediately start charging your battery by placing it on the charging station. In addition, unlike other devices with a wireless charging kit, it is not difficult to find the correct position of the device to power the load.

So if you do not have a wireless charging station, it is recommended that you purchase the wireless charging station of Nexus 4, which seems to work fine on the Galaxy S3.

Therefore, if you have a Galaxy S3, and you dream of one day be able to use a recharge via wireless kit, you are advised to buy the load receptor. So if you already have a wireless charging station, you only have to buy the load receiver for about 15 USD, if this is not the case, the complete kit will cost you about 50 USD.

how the smartphone with greater autonomy is called the Galaxy S4, followed by Xperia Z and the Nexus 4

Samsung Galaxy S4 Smartphone With Higher Autonomy

British magazine, published in today’s day an interesting infographic that shows the results of some tests about the battery of the leading smartphones of the moment. The magazine, in particular, has tested the battery life of the following smartphones: Samsung Galaxy S4, Sony Xperia Z, LG Nexus 4, HTC One, BlackBerry Z10, Apple iPhone 5 and Nokia Lumia 620.

The infographic presents the results of 3 well test: talk time, Internet browsing and autonomy in charging time, all results are expressed in minutes. The infographic (found at end of article) you can see how the smartphone with greater autonomy is called the Galaxy S4, followed by Xperia Z and the Nexus 4.

how the smartphone with greater autonomy is called the Galaxy S4, followed by Xperia Z and the Nexus 4

When surfing the Internet, the situation remains unchanged with regard to the first place in the smartphone with higher autonomy Galaxy S4 again but this time followed by the Xperia One and the BlackBerry Z10.

Regarding the test charging, the situation is distorted and sees the first place that iPhone 5 with faster charging waives high autonomy, followed by the Lumia 920 and the Galaxy S4, which is able to maintain even in the latter test a podium finish. You can control yourself autonomy in minutes and the position of the smartphone via the infographic found below.

Regarding the test charging, the situation is distorted and sees the first place that iPhone 5

Wireless Charging Kit that can load power of 650 mAh

Pre-Order Wireless Charging Kit For Samsung Galaxy S4

Those eagerly awaiting the commercialization of wireless charging IQ Samsung Galaxy S4 can finally rejoice, as it is now pre-order on several U.S. sites at the price of $ 90, you can finally say goodbye to congestion that provide the son chargers.

Wireless Charging Kit that can load power of 650 mAh

So this charging kit includes a rear cover charge and loading buffer. If you intend to use it everyday, it will immediately be used to cover a little larger than that found by default on the Galaxy S4. In addition, the cover may very well take over the NFC connection. Otherwise, the charging station is a little smaller than that found on other devices, and is slightly curved upwards and to facilitate sliding of the smartphone on the device, in contrast to what has been found on Nexus 4.

Technical data for the charger, so it provides a load power of 650 mAh which is quite reasonable considering the 500 mAh provided by a USB 2.0 port. In comparison, a wall charger provides 1A. We can deduce that this wireless charging station load slower than a conventional charger.

Therefore, if wireless charging kit for Smartphone Galaxy S4 interests you, you should wait a few days to get it for a sum of $ 90, about 68 euros. A price may be a little high, but still interesting.