No soporto cuando el wifi falla durante la videollamada.

Because no negates the verb.

• Soporto = I tolerate / I put up with
• No soporto = I can’t stand / I don’t tolerate

In Spanish, negation is usually made by putting no directly before the conjugated verb:

• No entiendo = I don’t understand
• No quiero = I don’t want

So No soporto cuando... means I can’t stand it when...

Soporto comes from the verb soportar, which literally means to bear, to endure, or to tolerate.

In everyday speech, no soportar is a common way to say:

• I can’t stand
• I can’t bear
• I really hate

So in this sentence, No soporto cuando... is a natural way to express annoyance.

Examples:

• No soporto el ruido. = I can’t stand the noise.
• No soporto esperar. = I can’t stand waiting.

Because this sentence refers to something that happens in a real, familiar, repeated way, not a future or uncertain event.

• cuando + indicative is used for habitual or factual situations.
• cuando + subjunctive is often used for future or not-yet-realised events.

Here, the speaker means whenever the wifi fails during a video call, which is a recurring experience, so falla is correct.

Compare:

• No soporto cuando el wifi falla. = I can’t stand it when the wifi fails.
  (habitual / general)
• Te llamaré cuando falle el wifi. = I’ll call you when the wifi fails.
  (future event)

Falla is the third person singular form of fallar.

• fallar = to fail / to malfunction / to go wrong
• falla = it fails

Here, el wifi is the subject, so the verb must match it:

• el wifi falla = the wifi fails / the wifi cuts out / the wifi stops working

This is a very common verb for technology:

• El móvil falla. = The phone is acting up.
• La conexión falla. = The connection fails.

In Spanish, borrowed nouns are assigned a grammatical gender, and wifi is commonly treated as masculine in Spain:

• el wifi
• un wifi bueno
• el wifi falla

This is standard and very common. Sometimes people also say la wifi in some regions or contexts, but el wifi is very widely accepted and especially common in Spain.

Spanish uses articles more often than English does.

In English, you might say:

• when wifi fails during a video call

But in Spanish, it is natural to say:

• cuando el wifi falla durante la videollamada

The articles help identify the noun as a general or context-specific thing.

So:

• el wifi = the wifi
• la videollamada = the video call

Even when English would leave the article out, Spanish often keeps it.

Durante means during, so it focuses on something happening in the course of the video call.

• durante la videollamada = during the video call

If you used en la videollamada, it would mean in the video call / on the video call, which is possible in some contexts, but durante is more precise here because the problem happens while the call is in progress.

So:

• durante = during
• en = in / on

Because the standard noun is videollamada, which means video call.

It is formed from:

• video
• llamada = call

The main noun is llamada, which is feminine, so the whole word is feminine:

• la videollamada
• una videollamada

Examples:

• Tengo una videollamada a las cinco. = I have a video call at five.
• La videollamada fue larga. = The video call was long.

Because it comes from video + llamada.

The second part, llamada, already starts with ll, so when the words combine, that spelling stays:

• llamada
• videollamada

This is normal in Spanish compound words.

Yes. No aguanto is also natural and means something like I can’t stand it or I can’t put up with it.

Compare:

• No soporto cuando el wifi falla.
• No aguanto cuando el wifi falla.

Both are correct. No soporto can sound a bit stronger or a bit more formal depending on context, while no aguanto is often very conversational.

Usually, Spanish speakers pronounce it similarly, but adapted to Spanish pronunciation, often like wee-fee.

Also, in writing, you may see:

• wifi
• wi-fi
• less commonly wifi treated as a regular borrowed noun

In everyday speech in Spain, el wifi is completely normal and widely understood.

Grammatically, yes, but it sounds less natural in English. A more natural translation would be:

• I can’t stand it when the wifi fails during the video call.
• I hate it when the wifi cuts out during a video call.

This is a good example of how soportar often matches English can’t stand better than tolerate in everyday contexts.