Per UmaniTechnology, explained to the people who use it every dayhttps://www.perumani.com/enBut what is 5G actually for? (And will you notice the difference?)https://www.perumani.com/en/what-is-it-for/a-cosa-serve-il-5g/https://www.perumani.com/en/what-is-it-for/a-cosa-serve-il-5g/It is printed on every tariff and every new phone. What it actually does, when you genuinely feel the difference, and when you are paying for a label you would never use.Sun, 13 Sep 2026 00:00:00 GMTChatGPT, Gemini, Copilot: what's the difference and do you need to payhttps://www.perumani.com/en/ai/chatgpt-gemini-copilot-differenze/https://www.perumani.com/en/ai/chatgpt-gemini-copilot-differenze/Three names you hear everywhere, all doing much the same thing. What actually separates them, when the free version is enough, and when a subscription earns its money.Sat, 12 Sep 2026 00:00:00 GMTPassword managers: why you need one and how to actually starthttps://www.perumani.com/en/cyber/gestore-password-come-iniziare/https://www.perumani.com/en/cyber/gestore-password-come-iniziare/Nobody can remember thirty different passwords, which is why almost everyone uses the same three. A password manager solves that, and you probably have one installed already.Sat, 12 Sep 2026 00:00:00 GMTSlow Wi-Fi: six checks to make before calling your providerhttps://www.perumani.com/en/tech/wifi-lento-controlli/https://www.perumani.com/en/tech/wifi-lento-controlli/The video stalls, the call breaks up, and the temptation is to switch provider. In most cases the problem is inside your home and costs nothing to fix. Here is how to find out in half an hour.Sat, 12 Sep 2026 00:00:00 GMTYour phone photos: how to actually keep them without paying every monthhttps://www.perumani.com/en/tech/foto-salvarle-senza-pagare/https://www.perumani.com/en/tech/foto-salvarle-senza-pagare/Storage is full and the warning keeps coming back. Before paying, work out how much space you really need: the answer often costs less than what you are being offered.Fri, 11 Sep 2026 00:00:00 GMTI clicked a scam link: what to do in the first two hourshttps://www.perumani.com/en/cyber/ho-cliccato-link-truffa-cosa-fare/https://www.perumani.com/en/cyber/ho-cliccato-link-truffa-cosa-fare/You clicked, maybe you even typed your details, and now your heart is racing. Stop for a minute: in most cases this is fixable. Here is what to do, in order, starting with the most urgent.Fri, 11 Sep 2026 00:00:00 GMTWindows 10 stopped getting updates: what you risk and your three optionshttps://www.perumani.com/en/tech/windows-10-fine-supporto-cosa-fare/https://www.perumani.com/en/tech/windows-10-fine-supporto-cosa-fare/Since 14 October 2025 Windows 10 no longer gets security fixes. The computer still works, but it is uncovered. How to tell in two minutes which situation you are in, and what to do.Fri, 11 Sep 2026 00:00:00 GMTBut what is a VPN for? (And do you actually need one?)https://www.perumani.com/en/what-is-it-for/a-cosa-serve-una-vpn/https://www.perumani.com/en/what-is-it-for/a-cosa-serve-una-vpn/The ads say you're in danger without a VPN. The truth is more boring: it's useful in three specific situations, and in all the others it's a subscription you don't need. Here they are.Thu, 10 Sep 2026 00:00:00 GMTHow to create a strong password you can actually rememberhttps://www.perumani.com/en/cyber/password-sicura-facile-da-ricordare/https://www.perumani.com/en/cyber/password-sicura-facile-da-ricordare/No weird formulas: a three-step method to invent long passwords, different for every site and easy to keep in mind. With examples.Wed, 09 Sep 2026 00:00:00 GMTWhat a language model is, and why it sometimes makes things uphttps://www.perumani.com/en/ai/cos-e-un-modello-linguistico/https://www.perumani.com/en/ai/cos-e-un-modello-linguistico/ChatGPT, Gemini and Claude are all built on language models. Here is how they really work, with no formulas, and why they occasionally get things wrong with total confidence.Tue, 08 Sep 2026 00:00:00 GMTTwo-step verification: what it is and how to turn it on in Gmail, in 5 minuteshttps://www.perumani.com/en/cyber/verifica-in-due-passaggi-spiegata-semplice/https://www.perumani.com/en/cyber/verifica-in-due-passaggi-spiegata-semplice/It's the extra lock that stops thieves even when they have your password. Explained from scratch, with the exact steps to turn it on for your Google account.Mon, 07 Sep 2026 00:00:00 GMTBut what is an eSIM for? (And is it worth switching?)https://www.perumani.com/en/what-is-it-for/a-cosa-serve-la-esim/https://www.perumani.com/en/what-is-it-for/a-cosa-serve-la-esim/New phones offer it, carriers push it, but nobody explains what changes. The eSIM in plain words: what it is, when it's worth it, and the one case where the plastic SIM is better.Sun, 06 Sep 2026 00:00:00 GMTHow to write an effective prompt: the 5 rules that actually change the answershttps://www.perumani.com/en/ai/come-scrivere-un-prompt-efficace/https://www.perumani.com/en/ai/come-scrivere-un-prompt-efficace/The quality of what you get from an AI assistant depends almost entirely on how you ask. Five practical rules, with before-and-after examples.Sat, 05 Sep 2026 00:00:00 GMTPhone backup: what it is, why you need it and how to set it up in 10 minuteshttps://www.perumani.com/en/cyber/backup-telefono-spiegato-semplice/https://www.perumani.com/en/cyber/backup-telefono-spiegato-semplice/If your phone breaks or gets stolen, photos and contacts are gone for good. Unless you have a backup. Here's how to turn it on for Android and iPhone, once and for all.Fri, 04 Sep 2026 00:00:00 GMTSmartphone battery: 7 habits that make it last longerhttps://www.perumani.com/en/tech/batteria-smartphone-abitudini/https://www.perumani.com/en/tech/batteria-smartphone-abitudini/No miracle app required. A few charging habits are enough to slow battery wear and keep your phone in shape for years.Thu, 03 Sep 2026 00:00:00 GMTPasskeys: what they are and why they are replacing passwordshttps://www.perumani.com/en/tech/passkey-cosa-sono/https://www.perumani.com/en/tech/passkey-cosa-sono/Google, Apple, Microsoft, Amazon and PayPal already support them. Passkeys get rid of passwords and make phishing almost impossible. Here is how they work and how to turn them on.Tue, 01 Sep 2026 00:00:00 GMTHow to spot a scam text message: the signs of smishing and what to dohttps://www.perumani.com/en/cyber/riconoscere-sms-phishing/https://www.perumani.com/en/cyber/riconoscere-sms-phishing/Parcels on hold, blocked accounts, fines to pay: scam texts are getting more convincing. Here are the five signs that give them away, and what to do if you've already tapped the link.Sun, 30 Aug 2026 00:00:00 GMTHow to free up space on Android and iPhone without deleting your photoshttps://www.perumani.com/en/tech/liberare-spazio-smartphone/https://www.perumani.com/en/tech/liberare-spazio-smartphone/Storage full but you don't want to give up your memories? Here, in order of effectiveness, is where the wasted gigabytes hide and how to get them back in ten minutes.Thu, 27 Aug 2026 00:00:00 GMTTwo-factor authentication: SMS, app or hardware key? Which one to choosehttps://www.perumani.com/en/cyber/autenticazione-due-fattori-quale-scegliere/https://www.perumani.com/en/cyber/autenticazione-due-fattori-quale-scegliere/Not all second factors are equal. A comparison of SMS codes, authenticator apps, push notifications, passkeys and hardware keys, with a recommendation for each type of account.Mon, 24 Aug 2026 00:00:00 GMT