Microsoft has revealed that 1 in 10 users who tried to install a software update on their Windows mobile experienced problems.
The company had previously said that only a "small number" of handsets were affected.
Owners have reported a range of issues following the download, from phones crashing, to becoming completely unusable.
Microsoft pulled the update soon after the problem came to light.
via BBC News – Microsoft says phone update failed 1 in 10 users. That’s pretty poor.