Several things wrong with the plant, which is clearly not doing well at all.
Picture one, the white stuff is probably an insect issue, mealy bugs or wooly aphids or something. Treatment is to spray it with soapy water spray (a little bit of real soap, not detergent like dish washing liquid in a quart of water) and then rinse.
Sometimes in hot weather tomato plant leaves curl up, just to conserve water and protect from sunburn. I was thinking that was what picture two would show, but I don't think it is. In that case, they usually roll UP and are not discolored and the plant keeps producing. I think it is diseased. Fungal diseases in tomato plants are common.
Picture three shows a general failure to thrive. I don't know what variety tomato plant you have. Is it some kind of very dwarf patio variety? Anyway your plant is tiny, not well branched or leafed out.
But you are in PHOENIX. I looked. You are having temps like 107, 108, 109. That is NOT tomato weather! (I'm not sure it is people weather either, but that is a different question
Honestly, I would throw the whole thing out, plant and soil (because the fungal diseases can stay in the soil). When daily high temperatures get below 90 (or maybe
95 if you get special heat resistant varieties like Sun Master), start over with new plant, new soil, and a bigger container.
In climates like yours, tomatoes are planted in late winter for a spring crop and late summer or early fall for a fall/ winter crop. They do not produce in very high temps. I grow tomatoes in the summer, but you can have two crops a year, so that makes up for not being able to grow them in the summer.
What direction does your balcony face? Is it covered?