Unlocking Galaxy Note 4

6 Jan 2021
Hi all,

I recently acquired a Samsung Galaxy note 4 that was previously on the Spanish network lenara. I have purchased an o2 pay monthly sim for it, although when it is put it it says 'Not registered on network'. The sim works in other devices so definately not a sim issue. Took to local shop and enquired about unlocking but they were unsure. What is the best advice you have ?

Many thanks
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