topic Re: Why Sony limit SD card speed to about 30 MB/s? in 1 Series

Why Sony limits SD card speed to about 30 MB/s?

ds2mph — Mon, 29 Jul 2019 18:51:09 GMT

SanDisk Extreme Pro 400GB V30 A2 (read write speeds up to 170/90) gets only about 30MB/s on the Xperia 1. (Tested via A1 SD Bench)

Why SD Card speed is limited to 30MB/s?

It seems All Xperia flagships (excluding Xperia XZ Premium,XZ1,XZ1 Compact) have this limitation.

/t5/Xperia-XZ2/2018-Phone-SD-Card-limited-to-18MB-s/td-p/1319383#gref

Re: Why Sony limit SD card speed to about 30 MB/s?

Uliwooly — Mon, 29 Jul 2019 20:16:29 GMT

@ds2mph

which app are you using to test the speed?

Re: Why Sony limit SD card speed to about 30 MB/s?

ds2mph — Tue, 30 Jul 2019 11:49:08 GMT

A1 SD Bench

Re: Why Sony limits SD card speed to about 30 MB/s?

Avril — Thu, 01 Aug 2019 20:11:40 GMT

buddy xzp got this bugs too...

i use samsung /t5/Xperia-XZ-Premium/Sony-Xperia-XZP-received-Mar-amp-Apr-2019-security-patches-quot/td-p/1370977

Re: Why Sony limits SD card speed to about 30 MB/s?

azzido — Wed, 07 Aug 2019 17:52:21 GMT

Any answer from sony mobile engineer on this topic?

Re: Why Sony limits SD card speed to about 30 MB/s?

Sony4KFoneLvr — Thu, 15 Aug 2019 22:47:23 GMT

Sony, can you respond? For a 4K display phone, it should allow fast speed. Thanks

Re: Why Sony limits SD card speed to about 30 MB/s?

azzido — Sat, 17 Aug 2019 07:46:43 GMT

Maybe they do not limit it but use cheap reader in X1

@Sony4KFoneLvr wrote:
Sony, can you respond? For a 4K display phone, it should allow fast speed. Thanks

Re: Why Sony limits SD card speed to about 30 MB/s?

ds2mph — Fri, 06 Sep 2019 21:44:30 GMT

https://forum.xda-developers.com/xperia-xz2/how-to/micro-sd-read-write-speed-t3783000/page7

https://forum.xda-developers.com/showpost.php?p=78870686&postcount=436

So, it is a software limitation...

Can be fixed by software update..

But as always, Sony mobile will never fix this problem.

Re: Why Sony limits SD card speed to about 30 MB/s?

pressefr — Sat, 07 Sep 2019 05:19:09 GMT

Wouldn't the larger the SDcard, 400GB, the slower the write speed. It's the card vs the phone. No?

For example when I switched to 4K video option it asked if I want to use internal memory. Since a 64GB Ultra cards are made for recording 4K for it's faster write speeds.

I have my own small issues; I currently use a 400GB SDcard. Once and a while when I pull out my phone to take a picture I get an error like 1/4 times randomly my Xperia 1 can't read my SDcard. I partly think it's to large for a its own good.

https://www.androidpolice.com/2019/02/13/sandisk-a2-and-400gb-microsd-roundup-review-buy-for-storage-not-apps/