[日本語から英語への翻訳依頼] 参考までに教えてください。 いままでに接続できなかった電話機はありましたか？ また接続できない場合どのような不具合が発生しましたか？

Original text

参考までに教えてください。
いままでに接続できなかった電話機はありましたか？
また接続できない場合どのような不具合が発生しましたか？

翻訳 / 英語

Please tell me just for reference.
Have you been in the situation that you couldn't have your phone connected?
If you have, what troubles did you have?

翻訳 / 英語

Please tell me the information for reference.
Did the situation that the phone couldn't be connected occur before?
If it occurred before, what was the unconnected reason at that time?

翻訳 / 英語

Please let me know for my reference.
Was there any telephone you could not connect?
Also what kind of failure occurred when you could not connect?

翻訳 / 英語

Please tell me just for reference.
Have you ever had any telephones that could not connect before?
If so, what sort of defects did they have?

翻訳 / 英語

Please tell me for my reference.
Up until now, do you have phone instruments which can not be connected?
And also, what kind of problem has occurred when you can not connect it?