Glue on the dash...

There's a lump of glue on the dash, where the previous owner had stuck their mobile phone holder.

Any ideas on how to remove it?

white spirit

Not nail varnish remover then

go to a hard ware shop and get a pipe frezze kit spay it on for a sec and the glue will freeze a expaned and fall off just ware ngloves because this **** frezzes everthing solid

that could work

isnt that stuff abit expensive to freeze one tiny bit of glue,
you could always stick another phone holder over it