Why Do Crypto Projects Offer Testnets Before Launch?

Before launching a blockchain or major application, projects often release testnets where users and developers can experiment with features without using the final network. Testnets allow teams to identify technical problems, test transaction capacity and receive feedback from the community. They can also give users an early look at how a project works before real assets are involved. For developers, participation can reveal issues that may not appear during internal testing. However, activity on a testnet doesn’t necessarily mean the final product will succeed. Should ordinary crypto users pay more attention to testnet activity when evaluating projects before their mainnet launches?

Thinking of finally trying a foldable phone during the sale season

Foldables have started looking much more refined lately, especially with slimmer designs and better durability. Prices are still high, but sale discounts make them slightly more tempting now. Are foldables practical enough for daily use yet, or still more of an experiment?

I want to change the outfit and add accessories to my picture. Should I use Gemini, ChatGPT, or Grok?

Many apparel brands are offering virtual try-on on outfits. Recently i was testing a few AI tools on my image. Looked on my Instagram feeds many of my Instafam have used the saree trend to generate images. I was also testing with a few prompts to generate images. I want to experiment with accessories with Western outfits. What should I opt for? Gemini, Chatgpt or Grok? Let me know your experience.

Is it worth to buy lens kit for mobile phone, ?

Namaste ! everyone
well first of all i tell you all am not a professional photographer ,or want to be.
i just loving to capture light in my phone. i want to do some little experiment. now i think to purchase lens kit for my mobile phone camera. but am bit confused to buy this thing. i have some little query regarding mobile lens kit.

1. how much i have to spend to buy a good quality lens ?
2. i have 2 phone (iphone 5s/galaxy s4) . is there any lens kit which compatible to both of my phone ?
3. which company/brand have best lens ?
4. & it woth to buy a lens kit ??

Want to buy a smartphone with great camera features

I’m a first year college student and
have a keen interest in photography. My obsession with photography is
at a an early stage so don't want to spend a huge amount in buying a
camera. I am thinking of buying a smartphone with great camera features
to build and experiment. Please suggest.