Missing the point...
In most cases a manufacturers or resellers warranty offers the consumer LESS protection than they ALREADY HAVE under the Sale of Goods Act...
While taking advantage of a warranty may be a convenient way to resolve an issue if you meet the conditions, under consumer law it is the retailers (in this case Voda) responsibility to ensure that the item is free of any pre existing defect (excepting normal 'wear and tear') for a period of SIX YEARS (Five years in Scotland).
As electronic devices don't generally have any parts which would be expected to 'wear out' under normal conditions this generally means that a consumer can get a repair / refund / replacement if the device fails within 6 years of it's purchase by approaching the seller / distributor with a claim under the Sale of Goods Act.
Unfortunately, although all big companies are well aware of these laws, they will invariably refuse the initial claim and will often not fulfil their obligation until they are faced with the threat or reality of court action, thankfully County Court online has made it possible for anyone to easily take such action for a fee of £25 (which can be included in the claim and recovered from the party at fault).
For a retailer to claim 'wear and tear' on a failed electronic device is almost impossible; they may for example claim that EPROM or other memory components have a limited number of flash cycles (if they are the cause of a failure) but they would have to show that this failure should have been reasonably expected by the user, and since product information doesn't tend to state that your new flashy phone may last less than 6 years as the memory chips will fail or the AMOLED screen will fade, such a defence would not be accepted.
Even in the case of items which are subject to wear, (e.g. home appliances), the consumer can often win full recompense or at the least a partial settlement proportionate to the age / usage of the item in question.
In all of this, however, the thing to remember is that the manufacturer is not the party to claim against, (unless it was bought directly from them), it's the retailer / distributor with whom you have your contract of sale.
Most of the information needed can be found in this guide:-