Hello to all :) , i have a very strange problems about my Samsung Galaxy Note 4 ‘ s ( you will understand why i said like this :) instead of note 4 :) ) and with my Sandisk 32 GB Class 10 U-I micro-SD card , first of all i want to tell that , I were using this card with my old galaxy Note II (GT-N100) since 2 years without having an issue or problem ( with all my musics and pictures inside the sd card and also almost my all programs were installed on sd card , while sometimes my Galaxy N II was in stock or custom rom , there were no any problem) , anyway :) , then i decided to upgrade to note 4 so , i bought 2 Note 4’s from a company in Cyprus (Models: SM-N910H and never opened box ) , 1 is for me (black) and 1 is for my wife (white) , anyway , i just opened boxes and setup phones and restores our backups (as you know contacts, sms and some programs that i already used on Note2 throu Google play) for me and for my wife ,(beside,but before i just takeout my SD card from note 2 and make o quick format on PC with a exFAT file system which is my note 2 was working great already with exFAT before and also FAT32 as well, then put it to my new Note 4 as new Formatted ) after a while (few days later) My note 4 start to pops up sudenly an SD card error "SD card is blank or has unsupported file system “ and when i touch it Format disk pops up and when i click yes it says checking the disk... and trying to format but does not format the disk and same error keeps again like SD card Blank ...... bla .. bla .. :) so i take out SD card from My note 4 and put to PC but no any problem , all my files at there , even i checkdisk the SD card but has not found any problem , then i put SD card to my old Note II again , even i can access files and has no any problem again , then i just put the card to my wife note 4 and also it detected card and it was working , after , i just format the SD card on my wife note 4 (whats an interesting point is that , my note 4 does not accept to format the SD card but my wife Note 4 formatted and successfully mounted the SD card without a problem) and i put it back to my note 4 again , and it was mounted succesfully , so started to setup again buy copying musics , puctures on to SD and install programs again to sd by using the application manager as for some compitable programs with “move to SD card” options , so i used my note 4 2 days with no problem then , i shut down my N4 at 2nd day night and put it into wall charge while it was powered off and when i wake in the morning and, i switch on my N4 and again my programs short cuts get dark (programs lost , and my musics plays first 4 – 8 seconds and N4 music player try to play next track like this loop then when i try to format disk again on my N4 , it did not format the SD and give SD card error "SD card is blank or has unsupported file system “ again then i put to PC but no any problem again , so i think that my N4 card slot is defective and give back to company where i bought it and request a replace but they dont accept they said they will test it about 10 days , so they said they tested it and the problem is about on sd card , because of under the SD card there were a black sticker which i was removed it 2 years before (also after i removed the sticker it was already working with my old N2 without a problem), and they said they fixed it by sticking to the under of SD card a white sticker (which is shown on picture) , so i get my N4 and tested 2 days worked great with SD card but when i shut it down and put it to charge when i wake up next day (3rd day) the same problem happened again so , ı went the company back for an replace but they said they will not replace but they would refund me with in max 10 day , anyway i left the N4 and start to use my N2 again with the SD card and it did not occured any problem and at the end of 10 th day , i got my %100 refunded money back , while in this period i did some research and learn that SM-N910H model only 3G variant and will never support 4G , so due to my research i decide to by SM-N910C or SM-N910CQ or SM-N910U , for an 8 cores with 4G support , by a luck , i found on an other small company just one SM-N910CQ model which is an Turkey product and the box never opened before , and i told the seller i want to open box and test it here before buying it , she said ok , and when i just open the box , i put out the sd card from my N2 and put to it and first run it and then BOOM again it gave the same error again , so i left the unit at there and did not bought it the seller said me that your SD might damaged , then i said her , ok put it you personal phone , which it was galaxy S3 , and she put and test it , the sd card were working and she agreed with me SM-N910CQ might be defective (please note that the SM-N910CQ came from the first company that I bought the SM-N910H unit , which was the company name were SUITEX LTD.) , and I started to think that all the series that , SUITEX LTD. NOTE4 S are defective or damaged , finally on last other company , I found my monster again :) SM-N910U (the most prefered model prefered by me :) cat6 4G and an upgraded Mali 760) :)nand it was last un-opened box , but when i opend box , and tested the card , it worked , and i immediately bought it :) , i were heppy :) i setup all the things and used it 4 days without any problems :) , and guess that what happend in 5 th , when i wake in the morning :) and turn the phone on again my programs short cuts get dark and then i click them they are not working (which i moved to SD card) and then i try to format the disk from my N4 it try to format but it can not , then gave the same error loop again like "SD card is blank or has unsupported file system “ but after 1 or 2 hour it fixs it self and , and all works as normally , so experts please help me , what might be the problem ?? , i am sure %100 that all the N4 were ok , i can not be unluky like that :) 3 Different model of N4 from different company can not be defective :) at the same tame :) , also i %100 sure that my sd card also ok , because its working with my Destop , Laptop , Note2 , and on my wife Note4 like a charm , also when i test the SD card , PC’s does not find any problem , i also Low level format My sd disk and make surface test , unfortunately not found any problem , I also formatted my SD card with SDFormatter4 which is provided by sandisk , and it has no errors again , also , i checked the compability of my 32 gb sandisk over the sandisk site , but it says %100 compitable with Samsung Galaxy Note 4 , i searched google and forums but not found any solution , so please help me what the problem might be ?? it can be related about note 4 software bug ?? maybe something wrong about android 4.4.4 ?? , any user like me ?? like this problem ?? please help , sorry for my bad english
