@Walter Hinteler,
Wouldn't it be amusing Walt if German intelligence knew the phone was being monitored over a period of several years. At that level a brand new mobile phone can be used every day for the real gravy.
I would have thought so anyway.
Two things seem odd to me--
1--That Merkel would use the same mobile phone over a period of years and
2-- that German Intelligence would not know if she had been doing.
Getting into Copeland country it is possible that the particular mobile phone was used to let the NSA know which football matches she was going to and which kindergartens she was visiting, along with the usual crews, in order that the US could see that she came to no harm, as a valued ally, because her own lot were not as good at it.
I know that's a bit far-fetched but it's a far-fetched world of murky mirrors and shadows were are opining about.