The Doctor's sonic screwdriver (Scream of the Shalka)
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The Doctor using his sonic screwdriver to sonic his phone. (WC: Scream of the Shalka [+]Loading...["Scream of the Shalka (webcast)"]
An alternate version of the Ninth Doctor carried a sonic screwdriver.
The Doctor using his sonic on his mobile phone.(WC: Scream of the Shalka [+]Loading...["Scream of the Shalka (webcast)"]
The Doctor once used his sonic screwdriver to "remind" his mobile phone that it was a part of the TARDIS and to form a door. (WC: Scream of the Shalka)
