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Energy Saving Tips from the Practice

for all Smartphones regardless of manufacturer

The Battery Life depends very much on the ambient Conditions

Stable LTE Supply favourable for Energy Consumption of Mobile Phones

When Deutsche Telekom began expanding 5G in Frankfurt in December 2019, it also optimized local LTE coverage for this purpose.
I benefited massively from the 5G rollout, even though I don't use any 5G equipment at all. The bad LTE reception at home is history since then (mostly the smartphone display showed 1 to 2 of 4 bars, very rarely 3 of 4 bars). Data flowed with 12 to 30 MBit/s in the download at that time.
Because LTE was weak but stable in reception, the BlackBerry Z10, Porsche Design P'9982 and iPhone almost always remained in this state-of-the-art battery-saving standard with Voice over LTE (VoLTE).
At my preferred restaurants in various parts of Frankfurt, LTE mobile phone coverage has already been excellent (data speed about 60 to 90 MBit/s in DL).
A pleasant side effect when surfing the web or reading a book in a café: the battery lasts very long.

5G Expansion reduces Energy Consumption of Smartphones

Since the 5G expansion with the side effect of a significant improvement of the local LTE supply, my iPhones usually show 3 to 4 of 4 bars of reception strength and the data throughput increased to an average (!) 100 MBit/s download and 50 MBit/s upload. Since the beginning of the pandemic, some of my neighbors seem to work all day from home with a mobile connection to the company server or stream a lot more music and movies in their free time than before, because since then the maximum transfer rate has dropped again during the day – peak values can only be reached at bedtime. Mobile telephony is a shared medium& – many customers share one network.
Regardless of transfer rates, batteries now last significantly longer because smartphones only need to transmit at a fraction of their power.

Increased Energy Consumption may be caused by Software

Due to the very good coordination of hardware and software, an iPhone without loaded third-party software consumes very little energy.
Bloatware, i.e. advertising software from third-party manufacturers that is unwanted by the customer, is not available on Apple smartphones.

You should avoid free apps with advertising banners, because they all (!) aim at your personal data, which is usually transmitted unencrypted and several times a day to dubious advertising servers.

Huge Offer of Apps – be picky and careful

Even free apps without banner ads can be disguised spy software, so you should be very selective when making your choice in the App Store.
I mention this here in the energy saving tips section, because unnecessary sending of data is not only immoral to criminal, but also strongly «pulls the battery». So even for people who don't care about the privacy of their friends (keyword: sending the complete address book to FB/WA!), it can't be completely irrelevant that someone secretly drains their battery (FB/WA demonstrably vacuum the complete address book hundreds of times a day! Security experts had already discovered this years ago with the help of the BlackBerry DTEK security app – the e Foundation has also discovered this in the meantime).

Web 2.0 Apps bad for Energy Balance and Privacy

I don't use any anti-social Web 2.0 garbage that disregards data protection – fortunately it's not even installed on iPhones ex works.
If you have Facebook or other apps belonging to the category Web 2.0 installed and the battery is always running low very quickly, try deleting these apps (make a backup beforehand if these apps are strangely important to you! You will be amazed! If you can't believe it, search for appropriate keywords in a search engine and you'll find proven tips such as «Save energy by removing the Facebook app». Surprised Smiley

Overloaded App Store quickly drains the Battery

The following happened similarly with Google Play, is a platform-independent problem:
When Apple distributed the iOS version 11, the App Store was also hardly accessible at times. This could also be read in internet forums and blogs.
I could always reach the App Store itself when I needed it, but I don't visit it every day. I had noticed, however, that software updates were sometimes not downloaded quickly but stalled and the iPhone kept trying until the download was complete – or the battery was empty! This can happen again at any time!

Remedy: deactivate automatic Updates!

With iOS:
Menu path Settings/Apple ID/iTunes & App Store/Automatic downloads/Updates [off].
Probably works similar on Android.

You do not have to manually exit Apps that are no longer needed

It's a myth that is stubborn like Android: closing apps after usage is designed to save energy and make the smartphone faster.
But also Apple's iOS remembers which applications were not used for the longest time and stops these when the memory becomes too tight (evidence).
On smartphones with very little memory, the operating system even terminates older apps more often than on devices with enough memory.

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