What is the maximum Transmit Power sent by 5G Iphone?

 I have been wondering so far how much power a 5G phone, like iPhone 12, can transmit to RAN (Radio Access Network), a.k.a. a base station.

According to the table in standard document ETSI TS 138 101-1, section 6.2.1 for "UE maximum output power", the maximum power for class 2 is 26 dBm (0.398 Watt) and for class 3 is 23 dBm (0.199 Watt).  Class 2 UE (User Element) only transmits at certain frequency bands only, namely n41, n77, n78, and n79, while class 3 transmits in all spectrums.

As stated, the period of measurement shall be at least one sub-frame (sfn, 1ms). 

The above maximum value is rarely reached unless the signal reception by UE or BS (Base station) is too weak.

To understand what are those NR bands, see 5G NR frequency bands - Wikipedia

Enabling Older Key Algorithms in SSH

Supposedly the server we want to access is at address 192.168.1.11 and it only supports older key hash algorithms.  Add those algorithms in ~/.ssh/config, such as:

 Host 192.168.1.11
        KexAlgorithms +diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1
        PubkeyAcceptedAlgorithms +ssh-rsa
        HostkeyAlgorithms +ssh-rsa

On another occasion, when I do that on Windows 11, I have to create a file %USERPROFILE%\.ssh\config with the content:

Host 192.168.1.11
    KexAlgorithms +diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1
    HostkeyAlgorithms +ssh-rsa
    PubkeyAcceptedAlgorithms +ssh-rsa
    MACS hmac-md5,hmac-sha1

Some tools to display EXIF data

 exifprobe

exiftags

exiftran

exiv2

fim

mediainfo (my favorite)

To install some of those, just install the following:

forensics-all

forensics-extra