Il faut flasher votre U900 avec le firmware français.
http://samsungflashfiles.uni.cc/
A télécharger le multiloader 5.33 et U900XXHC6.
Pour le tuto en anglais, c'est OK, je viens de passer mon U900 Vodafone en firmware samsung original
1. Make sure you have U900 FastMultiLoader v5.32 or v5.33, SGH-U900 flash file and the original samsung USB cable that came with the phone.
2. Connect the USB cable to your computer and install the USB drivers, unless the are already installed.
3. Remove the battery,simcard and memory card. Replace battery, Hold no.9 on keypad and press power button,Attach your phone to the USB cable, download" will be shown on your phone's screen.
4. Run the U900 FastMultiLoader v5.32 or v5.33
5. Select the radio button, which lists MSM6275/MSM6280.
6. Tick Boot Change and Full Download then click Boot and select the boot files which are inside the folder containing the flash files
7. Click the Amss, Rsrc1, Rsrc2 and Factory FS buttons and select the appropriate files. Select (Low).r2c rather than (Mid).r2c. FOTA and ETC fields should contain no file.
8. Click the Port Search button so that the connected COM port is shown as Ready.
10. Click the download button on the U900 FastMultiLoader v5.32 orv5.33 window.
11.When it's done it says "ok complete".
12.Unplug the USB cable, put the sim card and the battery back in and turn the phone on. It will initialise and restart by itself with the new firmware. To check your existing firmware type *#1234# into your handset.